CVE-2025-3756

mediumpriority · track · 0EPSS 0.002 · 8 %ileCHDEEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.18% (8th) EPSS

CVSS 6.5 · medium

Is it mine?

64 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · abb_psirt · cert_bund

EPSS · scored 2026-10-26

A vulnerability exists in the command handling of the IEC 61850 communication stack included in the product revisions listed as affected in this CVE. An attacker with access to IEC 61850 networks could exploit the vulnera bility by using a specially crafted 61850 packet, forcing the communication interfaces of the PM 877, CI850 and CI868 modules into fault mode or causing unavailability of the S+ Operations 61850 connectivity, resulting in a denial-of-service situation. The System 800xA IEC61850 Connect is not affected. Note: This vulnerability does not impact on the overall availability and functionality of the S+ Operations node, only the 61850 communication function. This issue affects AC800M (System 800xA): from 6.0.0x through 6.0.0303.0, from 6.1.0x through 6.1.0031.0, from 6.1.1x through 6.1.1004.0, from 6.1.1x through 6.1.1202.0, from 6.2.0x through 6.2.0006.0; Symphony Plus SD Series: A_0, A_1, A_2.003, A_3.005, A_4.001, B_0.005; Symphony Plus MR (Melody Rack): from 3.10 through 3.52; S+ Operations: 2.1, 2.2, 2.3, 3.3.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedABB Firmware 2.1 and related service packs installed on ABB S+ Operations using IEC 61850 connectivityabb_psirt
ABB advises all customers to review their installations to determine if they are using an impacted product as listed above, no further analysis or tools are needed to make this determination. The recommended immediate actions per product are listed below: - CI868 (for AC 800M) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in 6.1.1 and 7.0 tracks for 800xA. AC 800M 6.1.1-3 is planned for Q2 2027, AC 800M 7.0 has been released in December 2025. - CI850 (for Symphony Plus SD Series) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version C_0 or later (planned Q2 2026). - PM 877 (Symphony Plus MR) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected with firmware version 3.53 or later (planned Q1 2026). - S+ Operations Versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version 3.4 or later (released in January 2026). ABB recommends customers apply updates, as they become available, at their earliest convenience. It is also advisable to review the Mitigating Factors, Workarounds and General security recommendations sections for additional actions which may help reduce overall risk.
FixedABB Firmware 2.2 and related service packs installed on ABB S+ Operations using IEC 61850 connectivityabb_psirt
ABB advises all customers to review their installations to determine if they are using an impacted product as listed above, no further analysis or tools are needed to make this determination. The recommended immediate actions per product are listed below: - CI868 (for AC 800M) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in 6.1.1 and 7.0 tracks for 800xA. AC 800M 6.1.1-3 is planned for Q2 2027, AC 800M 7.0 has been released in December 2025. - CI850 (for Symphony Plus SD Series) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version C_0 or later (planned Q2 2026). - PM 877 (Symphony Plus MR) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected with firmware version 3.53 or later (planned Q1 2026). - S+ Operations Versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version 3.4 or later (released in January 2026). ABB recommends customers apply updates, as they become available, at their earliest convenience. It is also advisable to review the Mitigating Factors, Workarounds and General security recommendations sections for additional actions which may help reduce overall risk.
FixedABB Firmware 2.3 installed on ABB S+ Operations using IEC 61850 connectivityabb_psirt
ABB advises all customers to review their installations to determine if they are using an impacted product as listed above, no further analysis or tools are needed to make this determination. The recommended immediate actions per product are listed below: - CI868 (for AC 800M) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in 6.1.1 and 7.0 tracks for 800xA. AC 800M 6.1.1-3 is planned for Q2 2027, AC 800M 7.0 has been released in December 2025. - CI850 (for Symphony Plus SD Series) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version C_0 or later (planned Q2 2026). - PM 877 (Symphony Plus MR) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected with firmware version 3.53 or later (planned Q1 2026). - S+ Operations Versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version 3.4 or later (released in January 2026). ABB recommends customers apply updates, as they become available, at their earliest convenience. It is also advisable to review the Mitigating Factors, Workarounds and General security recommendations sections for additional actions which may help reduce overall risk.
FixedABB Firmware 3.3 and related service packs installed on ABB S+ Operations using IEC 61850 connectivityabb_psirt
ABB advises all customers to review their installations to determine if they are using an impacted product as listed above, no further analysis or tools are needed to make this determination. The recommended immediate actions per product are listed below: - CI868 (for AC 800M) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in 6.1.1 and 7.0 tracks for 800xA. AC 800M 6.1.1-3 is planned for Q2 2027, AC 800M 7.0 has been released in December 2025. - CI850 (for Symphony Plus SD Series) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version C_0 or later (planned Q2 2026). - PM 877 (Symphony Plus MR) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected with firmware version 3.53 or later (planned Q1 2026). - S+ Operations Versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version 3.4 or later (released in January 2026). ABB recommends customers apply updates, as they become available, at their earliest convenience. It is also advisable to review the Mitigating Factors, Workarounds and General security recommendations sections for additional actions which may help reduce overall risk.
FixedABB Firmware <=1.0031.0 (AC800M version 6.1.0-x) installed on ABB AC800M Product line (System 800xA) CI868 for IEC 61850 communicationabb_psirt
ABB advises all customers to review their installations to determine if they are using an impacted product as listed above, no further analysis or tools are needed to make this determination. The recommended immediate actions per product are listed below: - CI868 (for AC 800M) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in 6.1.1 and 7.0 tracks for 800xA. AC 800M 6.1.1-3 is planned for Q2 2027, AC 800M 7.0 has been released in December 2025. - CI850 (for Symphony Plus SD Series) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version C_0 or later (planned Q2 2026). - PM 877 (Symphony Plus MR) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected with firmware version 3.53 or later (planned Q1 2026). - S+ Operations Versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version 3.4 or later (released in January 2026). ABB recommends customers apply updates, as they become available, at their earliest convenience. It is also advisable to review the Mitigating Factors, Workarounds and General security recommendations sections for additional actions which may help reduce overall risk.
FixedABB Firmware <=6.0.0303.0 (AC800M version 6.0.0-x) installed on ABB AC800M Product line (System 800xA) CI868 for IEC 61850 communicationabb_psirt
ABB advises all customers to review their installations to determine if they are using an impacted product as listed above, no further analysis or tools are needed to make this determination. The recommended immediate actions per product are listed below: - CI868 (for AC 800M) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in 6.1.1 and 7.0 tracks for 800xA. AC 800M 6.1.1-3 is planned for Q2 2027, AC 800M 7.0 has been released in December 2025. - CI850 (for Symphony Plus SD Series) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version C_0 or later (planned Q2 2026). - PM 877 (Symphony Plus MR) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected with firmware version 3.53 or later (planned Q1 2026). - S+ Operations Versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version 3.4 or later (released in January 2026). ABB recommends customers apply updates, as they become available, at their earliest convenience. It is also advisable to review the Mitigating Factors, Workarounds and General security recommendations sections for additional actions which may help reduce overall risk.
FixedABB Firmware <=6.1.1004.0 AC800M version 6.1.1-0 and 6.1.1-1) installed on ABB AC800M Product line (System 800xA) CI868 for IEC 61850 communicationabb_psirt
ABB advises all customers to review their installations to determine if they are using an impacted product as listed above, no further analysis or tools are needed to make this determination. The recommended immediate actions per product are listed below: - CI868 (for AC 800M) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in 6.1.1 and 7.0 tracks for 800xA. AC 800M 6.1.1-3 is planned for Q2 2027, AC 800M 7.0 has been released in December 2025. - CI850 (for Symphony Plus SD Series) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version C_0 or later (planned Q2 2026). - PM 877 (Symphony Plus MR) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected with firmware version 3.53 or later (planned Q1 2026). - S+ Operations Versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version 3.4 or later (released in January 2026). ABB recommends customers apply updates, as they become available, at their earliest convenience. It is also advisable to review the Mitigating Factors, Workarounds and General security recommendations sections for additional actions which may help reduce overall risk.
FixedABB Firmware <=6.1.1202.0 (AC800M version 6.1.1-2) installed on ABB AC800M Product line (System 800xA) CI868 for IEC 61850 communicationabb_psirt
ABB advises all customers to review their installations to determine if they are using an impacted product as listed above, no further analysis or tools are needed to make this determination. The recommended immediate actions per product are listed below: - CI868 (for AC 800M) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in 6.1.1 and 7.0 tracks for 800xA. AC 800M 6.1.1-3 is planned for Q2 2027, AC 800M 7.0 has been released in December 2025. - CI850 (for Symphony Plus SD Series) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version C_0 or later (planned Q2 2026). - PM 877 (Symphony Plus MR) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected with firmware version 3.53 or later (planned Q1 2026). - S+ Operations Versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version 3.4 or later (released in January 2026). ABB recommends customers apply updates, as they become available, at their earliest convenience. It is also advisable to review the Mitigating Factors, Workarounds and General security recommendations sections for additional actions which may help reduce overall risk.
FixedABB Firmware <=6.2.0006.0 (AC800M version 6.2.0-0) installed on ABB AC800M Product line (System 800xA) CI868 for IEC 61850 communicationabb_psirt
ABB advises all customers to review their installations to determine if they are using an impacted product as listed above, no further analysis or tools are needed to make this determination. The recommended immediate actions per product are listed below: - CI868 (for AC 800M) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in 6.1.1 and 7.0 tracks for 800xA. AC 800M 6.1.1-3 is planned for Q2 2027, AC 800M 7.0 has been released in December 2025. - CI850 (for Symphony Plus SD Series) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version C_0 or later (planned Q2 2026). - PM 877 (Symphony Plus MR) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected with firmware version 3.53 or later (planned Q1 2026). - S+ Operations Versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version 3.4 or later (released in January 2026). ABB recommends customers apply updates, as they become available, at their earliest convenience. It is also advisable to review the Mitigating Factors, Workarounds and General security recommendations sections for additional actions which may help reduce overall risk.
FixedABB Firmware >=3.10|<=3.52 installed on ABB Symphony Plus MR (Melody Rack) PM 877 for IEC 61850 communicationabb_psirt
ABB advises all customers to review their installations to determine if they are using an impacted product as listed above, no further analysis or tools are needed to make this determination. The recommended immediate actions per product are listed below: - CI868 (for AC 800M) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in 6.1.1 and 7.0 tracks for 800xA. AC 800M 6.1.1-3 is planned for Q2 2027, AC 800M 7.0 has been released in December 2025. - CI850 (for Symphony Plus SD Series) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version C_0 or later (planned Q2 2026). - PM 877 (Symphony Plus MR) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected with firmware version 3.53 or later (planned Q1 2026). - S+ Operations Versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version 3.4 or later (released in January 2026). ABB recommends customers apply updates, as they become available, at their earliest convenience. It is also advisable to review the Mitigating Factors, Workarounds and General security recommendations sections for additional actions which may help reduce overall risk.
FixedABB Firmware A_0 installed on ABB Symphony Plus SD Series CI850 for IEC 61850 communicationabb_psirt
ABB advises all customers to review their installations to determine if they are using an impacted product as listed above, no further analysis or tools are needed to make this determination. The recommended immediate actions per product are listed below: - CI868 (for AC 800M) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in 6.1.1 and 7.0 tracks for 800xA. AC 800M 6.1.1-3 is planned for Q2 2027, AC 800M 7.0 has been released in December 2025. - CI850 (for Symphony Plus SD Series) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version C_0 or later (planned Q2 2026). - PM 877 (Symphony Plus MR) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected with firmware version 3.53 or later (planned Q1 2026). - S+ Operations Versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version 3.4 or later (released in January 2026). ABB recommends customers apply updates, as they become available, at their earliest convenience. It is also advisable to review the Mitigating Factors, Workarounds and General security recommendations sections for additional actions which may help reduce overall risk.
FixedABB Firmware A_1 installed on ABB Symphony Plus SD Series CI850 for IEC 61850 communicationabb_psirt
ABB advises all customers to review their installations to determine if they are using an impacted product as listed above, no further analysis or tools are needed to make this determination. The recommended immediate actions per product are listed below: - CI868 (for AC 800M) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in 6.1.1 and 7.0 tracks for 800xA. AC 800M 6.1.1-3 is planned for Q2 2027, AC 800M 7.0 has been released in December 2025. - CI850 (for Symphony Plus SD Series) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version C_0 or later (planned Q2 2026). - PM 877 (Symphony Plus MR) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected with firmware version 3.53 or later (planned Q1 2026). - S+ Operations Versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version 3.4 or later (released in January 2026). ABB recommends customers apply updates, as they become available, at their earliest convenience. It is also advisable to review the Mitigating Factors, Workarounds and General security recommendations sections for additional actions which may help reduce overall risk.
FixedABB Firmware A_2.003 installed on ABB Symphony Plus SD Series CI850 for IEC 61850 communicationabb_psirt
ABB advises all customers to review their installations to determine if they are using an impacted product as listed above, no further analysis or tools are needed to make this determination. The recommended immediate actions per product are listed below: - CI868 (for AC 800M) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in 6.1.1 and 7.0 tracks for 800xA. AC 800M 6.1.1-3 is planned for Q2 2027, AC 800M 7.0 has been released in December 2025. - CI850 (for Symphony Plus SD Series) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version C_0 or later (planned Q2 2026). - PM 877 (Symphony Plus MR) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected with firmware version 3.53 or later (planned Q1 2026). - S+ Operations Versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version 3.4 or later (released in January 2026). ABB recommends customers apply updates, as they become available, at their earliest convenience. It is also advisable to review the Mitigating Factors, Workarounds and General security recommendations sections for additional actions which may help reduce overall risk.
FixedABB Firmware A_3.005 installed on ABB Symphony Plus SD Series CI850 for IEC 61850 communicationabb_psirt
ABB advises all customers to review their installations to determine if they are using an impacted product as listed above, no further analysis or tools are needed to make this determination. The recommended immediate actions per product are listed below: - CI868 (for AC 800M) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in 6.1.1 and 7.0 tracks for 800xA. AC 800M 6.1.1-3 is planned for Q2 2027, AC 800M 7.0 has been released in December 2025. - CI850 (for Symphony Plus SD Series) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version C_0 or later (planned Q2 2026). - PM 877 (Symphony Plus MR) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected with firmware version 3.53 or later (planned Q1 2026). - S+ Operations Versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version 3.4 or later (released in January 2026). ABB recommends customers apply updates, as they become available, at their earliest convenience. It is also advisable to review the Mitigating Factors, Workarounds and General security recommendations sections for additional actions which may help reduce overall risk.
FixedABB Firmware A_4.001 installed on ABB Symphony Plus SD Series CI850 for IEC 61850 communicationabb_psirt
ABB advises all customers to review their installations to determine if they are using an impacted product as listed above, no further analysis or tools are needed to make this determination. The recommended immediate actions per product are listed below: - CI868 (for AC 800M) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in 6.1.1 and 7.0 tracks for 800xA. AC 800M 6.1.1-3 is planned for Q2 2027, AC 800M 7.0 has been released in December 2025. - CI850 (for Symphony Plus SD Series) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version C_0 or later (planned Q2 2026). - PM 877 (Symphony Plus MR) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected with firmware version 3.53 or later (planned Q1 2026). - S+ Operations Versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version 3.4 or later (released in January 2026). ABB recommends customers apply updates, as they become available, at their earliest convenience. It is also advisable to review the Mitigating Factors, Workarounds and General security recommendations sections for additional actions which may help reduce overall risk.
FixedABB Firmware B_0.005 installed on ABB Symphony Plus SD Series CI850 for IEC 61850 communicationabb_psirt
ABB advises all customers to review their installations to determine if they are using an impacted product as listed above, no further analysis or tools are needed to make this determination. The recommended immediate actions per product are listed below: - CI868 (for AC 800M) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in 6.1.1 and 7.0 tracks for 800xA. AC 800M 6.1.1-3 is planned for Q2 2027, AC 800M 7.0 has been released in December 2025. - CI850 (for Symphony Plus SD Series) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version C_0 or later (planned Q2 2026). - PM 877 (Symphony Plus MR) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected with firmware version 3.53 or later (planned Q1 2026). - S+ Operations Versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version 3.4 or later (released in January 2026). ABB recommends customers apply updates, as they become available, at their earliest convenience. It is also advisable to review the Mitigating Factors, Workarounds and General security recommendations sections for additional actions which may help reduce overall risk.
FixedABB Firmware 2.1 and related service packs installed on ABB S+ Operations using IEC 61850 connectivitycisa_csaf_ot
ABB advises all customers to review their installations to determine if they are using an impacted product as listed above, no further analysis or tools are needed to make this determination. The recommended immediate actions per product are listed below: - CI868 (for AC 800M) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in 6.1.1 and 7.0 tracks for 800xA. AC 800M 6.1.1-3 is planned for Q2 2027, AC 800M 7.0 has been released in December 2025. - CI850 (for Symphony Plus SD Series) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version C_0 or later (planned Q2 2026). - PM 877 (Symphony Plus MR) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected with firmware version 3.53 or later (planned Q1 2026). - S+ Operations Versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version 3.4 or later (released in January 2026). ABB recommends customers apply updates, as they become available, at their earliest convenience. It is also advisable to review the Mitigating Factors, Workarounds and General security recommendations sections for additional actions which may help reduce overall risk.
FixedABB Firmware 2.2 and related service packs installed on ABB S+ Operations using IEC 61850 connectivitycisa_csaf_ot
ABB advises all customers to review their installations to determine if they are using an impacted product as listed above, no further analysis or tools are needed to make this determination. The recommended immediate actions per product are listed below: - CI868 (for AC 800M) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in 6.1.1 and 7.0 tracks for 800xA. AC 800M 6.1.1-3 is planned for Q2 2027, AC 800M 7.0 has been released in December 2025. - CI850 (for Symphony Plus SD Series) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version C_0 or later (planned Q2 2026). - PM 877 (Symphony Plus MR) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected with firmware version 3.53 or later (planned Q1 2026). - S+ Operations Versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version 3.4 or later (released in January 2026). ABB recommends customers apply updates, as they become available, at their earliest convenience. It is also advisable to review the Mitigating Factors, Workarounds and General security recommendations sections for additional actions which may help reduce overall risk.
FixedABB Firmware 2.3 installed on ABB S+ Operations using IEC 61850 connectivitycisa_csaf_ot
ABB advises all customers to review their installations to determine if they are using an impacted product as listed above, no further analysis or tools are needed to make this determination. The recommended immediate actions per product are listed below: - CI868 (for AC 800M) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in 6.1.1 and 7.0 tracks for 800xA. AC 800M 6.1.1-3 is planned for Q2 2027, AC 800M 7.0 has been released in December 2025. - CI850 (for Symphony Plus SD Series) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version C_0 or later (planned Q2 2026). - PM 877 (Symphony Plus MR) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected with firmware version 3.53 or later (planned Q1 2026). - S+ Operations Versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version 3.4 or later (released in January 2026). ABB recommends customers apply updates, as they become available, at their earliest convenience. It is also advisable to review the Mitigating Factors, Workarounds and General security recommendations sections for additional actions which may help reduce overall risk.
FixedABB Firmware 3.3 and related service packs installed on ABB S+ Operations using IEC 61850 connectivitycisa_csaf_ot
ABB advises all customers to review their installations to determine if they are using an impacted product as listed above, no further analysis or tools are needed to make this determination. The recommended immediate actions per product are listed below: - CI868 (for AC 800M) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in 6.1.1 and 7.0 tracks for 800xA. AC 800M 6.1.1-3 is planned for Q2 2027, AC 800M 7.0 has been released in December 2025. - CI850 (for Symphony Plus SD Series) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version C_0 or later (planned Q2 2026). - PM 877 (Symphony Plus MR) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected with firmware version 3.53 or later (planned Q1 2026). - S+ Operations Versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version 3.4 or later (released in January 2026). ABB recommends customers apply updates, as they become available, at their earliest convenience. It is also advisable to review the Mitigating Factors, Workarounds and General security recommendations sections for additional actions which may help reduce overall risk.
FixedABB Firmware <=1.0031.0 (AC800M version 6.1.0-x) installed on ABB AC800M Product line (System 800xA) CI868 for IEC 61850 communicationcisa_csaf_ot
ABB advises all customers to review their installations to determine if they are using an impacted product as listed above, no further analysis or tools are needed to make this determination. The recommended immediate actions per product are listed below: - CI868 (for AC 800M) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in 6.1.1 and 7.0 tracks for 800xA. AC 800M 6.1.1-3 is planned for Q2 2027, AC 800M 7.0 has been released in December 2025. - CI850 (for Symphony Plus SD Series) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version C_0 or later (planned Q2 2026). - PM 877 (Symphony Plus MR) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected with firmware version 3.53 or later (planned Q1 2026). - S+ Operations Versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version 3.4 or later (released in January 2026). ABB recommends customers apply updates, as they become available, at their earliest convenience. It is also advisable to review the Mitigating Factors, Workarounds and General security recommendations sections for additional actions which may help reduce overall risk.
FixedABB Firmware <=6.0.0303.0 (AC800M version 6.0.0-x) installed on ABB AC800M Product line (System 800xA) CI868 for IEC 61850 communicationcisa_csaf_ot
ABB advises all customers to review their installations to determine if they are using an impacted product as listed above, no further analysis or tools are needed to make this determination. The recommended immediate actions per product are listed below: - CI868 (for AC 800M) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in 6.1.1 and 7.0 tracks for 800xA. AC 800M 6.1.1-3 is planned for Q2 2027, AC 800M 7.0 has been released in December 2025. - CI850 (for Symphony Plus SD Series) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version C_0 or later (planned Q2 2026). - PM 877 (Symphony Plus MR) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected with firmware version 3.53 or later (planned Q1 2026). - S+ Operations Versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version 3.4 or later (released in January 2026). ABB recommends customers apply updates, as they become available, at their earliest convenience. It is also advisable to review the Mitigating Factors, Workarounds and General security recommendations sections for additional actions which may help reduce overall risk.
FixedABB Firmware <=6.1.1004.0 AC800M version 6.1.1-0 and 6.1.1-1) installed on ABB AC800M Product line (System 800xA) CI868 for IEC 61850 communicationcisa_csaf_ot
ABB advises all customers to review their installations to determine if they are using an impacted product as listed above, no further analysis or tools are needed to make this determination. The recommended immediate actions per product are listed below: - CI868 (for AC 800M) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in 6.1.1 and 7.0 tracks for 800xA. AC 800M 6.1.1-3 is planned for Q2 2027, AC 800M 7.0 has been released in December 2025. - CI850 (for Symphony Plus SD Series) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version C_0 or later (planned Q2 2026). - PM 877 (Symphony Plus MR) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected with firmware version 3.53 or later (planned Q1 2026). - S+ Operations Versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version 3.4 or later (released in January 2026). ABB recommends customers apply updates, as they become available, at their earliest convenience. It is also advisable to review the Mitigating Factors, Workarounds and General security recommendations sections for additional actions which may help reduce overall risk.
FixedABB Firmware <=6.1.1202.0 (AC800M version 6.1.1-2) installed on ABB AC800M Product line (System 800xA) CI868 for IEC 61850 communicationcisa_csaf_ot
ABB advises all customers to review their installations to determine if they are using an impacted product as listed above, no further analysis or tools are needed to make this determination. The recommended immediate actions per product are listed below: - CI868 (for AC 800M) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in 6.1.1 and 7.0 tracks for 800xA. AC 800M 6.1.1-3 is planned for Q2 2027, AC 800M 7.0 has been released in December 2025. - CI850 (for Symphony Plus SD Series) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version C_0 or later (planned Q2 2026). - PM 877 (Symphony Plus MR) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected with firmware version 3.53 or later (planned Q1 2026). - S+ Operations Versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version 3.4 or later (released in January 2026). ABB recommends customers apply updates, as they become available, at their earliest convenience. It is also advisable to review the Mitigating Factors, Workarounds and General security recommendations sections for additional actions which may help reduce overall risk.
FixedABB Firmware <=6.2.0006.0 (AC800M version 6.2.0-0) installed on ABB AC800M Product line (System 800xA) CI868 for IEC 61850 communicationcisa_csaf_ot
ABB advises all customers to review their installations to determine if they are using an impacted product as listed above, no further analysis or tools are needed to make this determination. The recommended immediate actions per product are listed below: - CI868 (for AC 800M) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in 6.1.1 and 7.0 tracks for 800xA. AC 800M 6.1.1-3 is planned for Q2 2027, AC 800M 7.0 has been released in December 2025. - CI850 (for Symphony Plus SD Series) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version C_0 or later (planned Q2 2026). - PM 877 (Symphony Plus MR) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected with firmware version 3.53 or later (planned Q1 2026). - S+ Operations Versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version 3.4 or later (released in January 2026). ABB recommends customers apply updates, as they become available, at their earliest convenience. It is also advisable to review the Mitigating Factors, Workarounds and General security recommendations sections for additional actions which may help reduce overall risk.
FixedABB Firmware >=3.10|<=3.52 installed on ABB Symphony Plus MR (Melody Rack) PM 877 for IEC 61850 communicationcisa_csaf_ot
ABB advises all customers to review their installations to determine if they are using an impacted product as listed above, no further analysis or tools are needed to make this determination. The recommended immediate actions per product are listed below: - CI868 (for AC 800M) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in 6.1.1 and 7.0 tracks for 800xA. AC 800M 6.1.1-3 is planned for Q2 2027, AC 800M 7.0 has been released in December 2025. - CI850 (for Symphony Plus SD Series) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version C_0 or later (planned Q2 2026). - PM 877 (Symphony Plus MR) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected with firmware version 3.53 or later (planned Q1 2026). - S+ Operations Versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version 3.4 or later (released in January 2026). ABB recommends customers apply updates, as they become available, at their earliest convenience. It is also advisable to review the Mitigating Factors, Workarounds and General security recommendations sections for additional actions which may help reduce overall risk.
FixedABB Firmware A_0 installed on ABB Symphony Plus SD Series CI850 for IEC 61850 communicationcisa_csaf_ot
ABB advises all customers to review their installations to determine if they are using an impacted product as listed above, no further analysis or tools are needed to make this determination. The recommended immediate actions per product are listed below: - CI868 (for AC 800M) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in 6.1.1 and 7.0 tracks for 800xA. AC 800M 6.1.1-3 is planned for Q2 2027, AC 800M 7.0 has been released in December 2025. - CI850 (for Symphony Plus SD Series) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version C_0 or later (planned Q2 2026). - PM 877 (Symphony Plus MR) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected with firmware version 3.53 or later (planned Q1 2026). - S+ Operations Versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version 3.4 or later (released in January 2026). ABB recommends customers apply updates, as they become available, at their earliest convenience. It is also advisable to review the Mitigating Factors, Workarounds and General security recommendations sections for additional actions which may help reduce overall risk.
FixedABB Firmware A_1 installed on ABB Symphony Plus SD Series CI850 for IEC 61850 communicationcisa_csaf_ot
ABB advises all customers to review their installations to determine if they are using an impacted product as listed above, no further analysis or tools are needed to make this determination. The recommended immediate actions per product are listed below: - CI868 (for AC 800M) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in 6.1.1 and 7.0 tracks for 800xA. AC 800M 6.1.1-3 is planned for Q2 2027, AC 800M 7.0 has been released in December 2025. - CI850 (for Symphony Plus SD Series) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version C_0 or later (planned Q2 2026). - PM 877 (Symphony Plus MR) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected with firmware version 3.53 or later (planned Q1 2026). - S+ Operations Versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version 3.4 or later (released in January 2026). ABB recommends customers apply updates, as they become available, at their earliest convenience. It is also advisable to review the Mitigating Factors, Workarounds and General security recommendations sections for additional actions which may help reduce overall risk.
FixedABB Firmware A_2.003 installed on ABB Symphony Plus SD Series CI850 for IEC 61850 communicationcisa_csaf_ot
ABB advises all customers to review their installations to determine if they are using an impacted product as listed above, no further analysis or tools are needed to make this determination. The recommended immediate actions per product are listed below: - CI868 (for AC 800M) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in 6.1.1 and 7.0 tracks for 800xA. AC 800M 6.1.1-3 is planned for Q2 2027, AC 800M 7.0 has been released in December 2025. - CI850 (for Symphony Plus SD Series) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version C_0 or later (planned Q2 2026). - PM 877 (Symphony Plus MR) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected with firmware version 3.53 or later (planned Q1 2026). - S+ Operations Versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version 3.4 or later (released in January 2026). ABB recommends customers apply updates, as they become available, at their earliest convenience. It is also advisable to review the Mitigating Factors, Workarounds and General security recommendations sections for additional actions which may help reduce overall risk.
FixedABB Firmware A_3.005 installed on ABB Symphony Plus SD Series CI850 for IEC 61850 communicationcisa_csaf_ot
ABB advises all customers to review their installations to determine if they are using an impacted product as listed above, no further analysis or tools are needed to make this determination. The recommended immediate actions per product are listed below: - CI868 (for AC 800M) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in 6.1.1 and 7.0 tracks for 800xA. AC 800M 6.1.1-3 is planned for Q2 2027, AC 800M 7.0 has been released in December 2025. - CI850 (for Symphony Plus SD Series) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version C_0 or later (planned Q2 2026). - PM 877 (Symphony Plus MR) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected with firmware version 3.53 or later (planned Q1 2026). - S+ Operations Versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version 3.4 or later (released in January 2026). ABB recommends customers apply updates, as they become available, at their earliest convenience. It is also advisable to review the Mitigating Factors, Workarounds and General security recommendations sections for additional actions which may help reduce overall risk.
FixedABB Firmware A_4.001 installed on ABB Symphony Plus SD Series CI850 for IEC 61850 communicationcisa_csaf_ot
ABB advises all customers to review their installations to determine if they are using an impacted product as listed above, no further analysis or tools are needed to make this determination. The recommended immediate actions per product are listed below: - CI868 (for AC 800M) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in 6.1.1 and 7.0 tracks for 800xA. AC 800M 6.1.1-3 is planned for Q2 2027, AC 800M 7.0 has been released in December 2025. - CI850 (for Symphony Plus SD Series) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version C_0 or later (planned Q2 2026). - PM 877 (Symphony Plus MR) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected with firmware version 3.53 or later (planned Q1 2026). - S+ Operations Versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version 3.4 or later (released in January 2026). ABB recommends customers apply updates, as they become available, at their earliest convenience. It is also advisable to review the Mitigating Factors, Workarounds and General security recommendations sections for additional actions which may help reduce overall risk.
FixedABB Firmware B_0.005 installed on ABB Symphony Plus SD Series CI850 for IEC 61850 communicationcisa_csaf_ot
ABB advises all customers to review their installations to determine if they are using an impacted product as listed above, no further analysis or tools are needed to make this determination. The recommended immediate actions per product are listed below: - CI868 (for AC 800M) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in 6.1.1 and 7.0 tracks for 800xA. AC 800M 6.1.1-3 is planned for Q2 2027, AC 800M 7.0 has been released in December 2025. - CI850 (for Symphony Plus SD Series) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version C_0 or later (planned Q2 2026). - PM 877 (Symphony Plus MR) Devices with firmware versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected with firmware version 3.53 or later (planned Q1 2026). - S+ Operations Versions reported in Affected products are vulnerable. All the vulnerabilities will be corrected in version 3.4 or later (released in January 2026). ABB recommends customers apply updates, as they become available, at their earliest convenience. It is also advisable to review the Mitigating Factors, Workarounds and General security recommendations sections for additional actions which may help reduce overall risk.
MitigationABB Firmware 2.1 and related service packs installed on ABB S+ Operations using IEC 61850 connectivityabb_psirt
The vulnerabilities announced in this Advisory for ABB Process Automation products require that an attacker has access to the system network and hosts which are generally expected to be protected. Process Control and IEC 61850 networks are NOT recommended to be exposed directly to Internet connections. If these networks are not properly isolated, then connected components may be remotely exploitable as described in this advisory. To exploit the vulnerability, an attacker with remote network access can send a specially crafted packet to the PM 877, CI850 and CI868 modules which causes the fault of these devices. S+ Operations only implements 61850 client services and therefore are not intended to listen to in-coming connection requests. However, if a specially crafted message is sent anyway, it can still cause the 61850-communication driver to crash. The usage of a perimeter firewall to allow legitimate client communications is an effective mitigation. Refer to section “General security recommendations” for further advise on how to keep your system secure.
MitigationABB Firmware 2.2 and related service packs installed on ABB S+ Operations using IEC 61850 connectivityabb_psirt
The vulnerabilities announced in this Advisory for ABB Process Automation products require that an attacker has access to the system network and hosts which are generally expected to be protected. Process Control and IEC 61850 networks are NOT recommended to be exposed directly to Internet connections. If these networks are not properly isolated, then connected components may be remotely exploitable as described in this advisory. To exploit the vulnerability, an attacker with remote network access can send a specially crafted packet to the PM 877, CI850 and CI868 modules which causes the fault of these devices. S+ Operations only implements 61850 client services and therefore are not intended to listen to in-coming connection requests. However, if a specially crafted message is sent anyway, it can still cause the 61850-communication driver to crash. The usage of a perimeter firewall to allow legitimate client communications is an effective mitigation. Refer to section “General security recommendations” for further advise on how to keep your system secure.
MitigationABB Firmware 2.3 installed on ABB S+ Operations using IEC 61850 connectivityabb_psirt
The vulnerabilities announced in this Advisory for ABB Process Automation products require that an attacker has access to the system network and hosts which are generally expected to be protected. Process Control and IEC 61850 networks are NOT recommended to be exposed directly to Internet connections. If these networks are not properly isolated, then connected components may be remotely exploitable as described in this advisory. To exploit the vulnerability, an attacker with remote network access can send a specially crafted packet to the PM 877, CI850 and CI868 modules which causes the fault of these devices. S+ Operations only implements 61850 client services and therefore are not intended to listen to in-coming connection requests. However, if a specially crafted message is sent anyway, it can still cause the 61850-communication driver to crash. The usage of a perimeter firewall to allow legitimate client communications is an effective mitigation. Refer to section “General security recommendations” for further advise on how to keep your system secure.
MitigationABB Firmware 3.3 and related service packs installed on ABB S+ Operations using IEC 61850 connectivityabb_psirt
The vulnerabilities announced in this Advisory for ABB Process Automation products require that an attacker has access to the system network and hosts which are generally expected to be protected. Process Control and IEC 61850 networks are NOT recommended to be exposed directly to Internet connections. If these networks are not properly isolated, then connected components may be remotely exploitable as described in this advisory. To exploit the vulnerability, an attacker with remote network access can send a specially crafted packet to the PM 877, CI850 and CI868 modules which causes the fault of these devices. S+ Operations only implements 61850 client services and therefore are not intended to listen to in-coming connection requests. However, if a specially crafted message is sent anyway, it can still cause the 61850-communication driver to crash. The usage of a perimeter firewall to allow legitimate client communications is an effective mitigation. Refer to section “General security recommendations” for further advise on how to keep your system secure.
MitigationABB Firmware <=1.0031.0 (AC800M version 6.1.0-x) installed on ABB AC800M Product line (System 800xA) CI868 for IEC 61850 communicationabb_psirt
The vulnerabilities announced in this Advisory for ABB Process Automation products require that an attacker has access to the system network and hosts which are generally expected to be protected. Process Control and IEC 61850 networks are NOT recommended to be exposed directly to Internet connections. If these networks are not properly isolated, then connected components may be remotely exploitable as described in this advisory. To exploit the vulnerability, an attacker with remote network access can send a specially crafted packet to the PM 877, CI850 and CI868 modules which causes the fault of these devices. S+ Operations only implements 61850 client services and therefore are not intended to listen to in-coming connection requests. However, if a specially crafted message is sent anyway, it can still cause the 61850-communication driver to crash. The usage of a perimeter firewall to allow legitimate client communications is an effective mitigation. Refer to section “General security recommendations” for further advise on how to keep your system secure.
MitigationABB Firmware <=6.0.0303.0 (AC800M version 6.0.0-x) installed on ABB AC800M Product line (System 800xA) CI868 for IEC 61850 communicationabb_psirt
The vulnerabilities announced in this Advisory for ABB Process Automation products require that an attacker has access to the system network and hosts which are generally expected to be protected. Process Control and IEC 61850 networks are NOT recommended to be exposed directly to Internet connections. If these networks are not properly isolated, then connected components may be remotely exploitable as described in this advisory. To exploit the vulnerability, an attacker with remote network access can send a specially crafted packet to the PM 877, CI850 and CI868 modules which causes the fault of these devices. S+ Operations only implements 61850 client services and therefore are not intended to listen to in-coming connection requests. However, if a specially crafted message is sent anyway, it can still cause the 61850-communication driver to crash. The usage of a perimeter firewall to allow legitimate client communications is an effective mitigation. Refer to section “General security recommendations” for further advise on how to keep your system secure.
MitigationABB Firmware <=6.1.1004.0 AC800M version 6.1.1-0 and 6.1.1-1) installed on ABB AC800M Product line (System 800xA) CI868 for IEC 61850 communicationabb_psirt
The vulnerabilities announced in this Advisory for ABB Process Automation products require that an attacker has access to the system network and hosts which are generally expected to be protected. Process Control and IEC 61850 networks are NOT recommended to be exposed directly to Internet connections. If these networks are not properly isolated, then connected components may be remotely exploitable as described in this advisory. To exploit the vulnerability, an attacker with remote network access can send a specially crafted packet to the PM 877, CI850 and CI868 modules which causes the fault of these devices. S+ Operations only implements 61850 client services and therefore are not intended to listen to in-coming connection requests. However, if a specially crafted message is sent anyway, it can still cause the 61850-communication driver to crash. The usage of a perimeter firewall to allow legitimate client communications is an effective mitigation. Refer to section “General security recommendations” for further advise on how to keep your system secure.
MitigationABB Firmware <=6.1.1202.0 (AC800M version 6.1.1-2) installed on ABB AC800M Product line (System 800xA) CI868 for IEC 61850 communicationabb_psirt
The vulnerabilities announced in this Advisory for ABB Process Automation products require that an attacker has access to the system network and hosts which are generally expected to be protected. Process Control and IEC 61850 networks are NOT recommended to be exposed directly to Internet connections. If these networks are not properly isolated, then connected components may be remotely exploitable as described in this advisory. To exploit the vulnerability, an attacker with remote network access can send a specially crafted packet to the PM 877, CI850 and CI868 modules which causes the fault of these devices. S+ Operations only implements 61850 client services and therefore are not intended to listen to in-coming connection requests. However, if a specially crafted message is sent anyway, it can still cause the 61850-communication driver to crash. The usage of a perimeter firewall to allow legitimate client communications is an effective mitigation. Refer to section “General security recommendations” for further advise on how to keep your system secure.
MitigationABB Firmware <=6.2.0006.0 (AC800M version 6.2.0-0) installed on ABB AC800M Product line (System 800xA) CI868 for IEC 61850 communicationabb_psirt
The vulnerabilities announced in this Advisory for ABB Process Automation products require that an attacker has access to the system network and hosts which are generally expected to be protected. Process Control and IEC 61850 networks are NOT recommended to be exposed directly to Internet connections. If these networks are not properly isolated, then connected components may be remotely exploitable as described in this advisory. To exploit the vulnerability, an attacker with remote network access can send a specially crafted packet to the PM 877, CI850 and CI868 modules which causes the fault of these devices. S+ Operations only implements 61850 client services and therefore are not intended to listen to in-coming connection requests. However, if a specially crafted message is sent anyway, it can still cause the 61850-communication driver to crash. The usage of a perimeter firewall to allow legitimate client communications is an effective mitigation. Refer to section “General security recommendations” for further advise on how to keep your system secure.
MitigationABB Firmware >=3.10|<=3.52 installed on ABB Symphony Plus MR (Melody Rack) PM 877 for IEC 61850 communicationabb_psirt
The vulnerabilities announced in this Advisory for ABB Process Automation products require that an attacker has access to the system network and hosts which are generally expected to be protected. Process Control and IEC 61850 networks are NOT recommended to be exposed directly to Internet connections. If these networks are not properly isolated, then connected components may be remotely exploitable as described in this advisory. To exploit the vulnerability, an attacker with remote network access can send a specially crafted packet to the PM 877, CI850 and CI868 modules which causes the fault of these devices. S+ Operations only implements 61850 client services and therefore are not intended to listen to in-coming connection requests. However, if a specially crafted message is sent anyway, it can still cause the 61850-communication driver to crash. The usage of a perimeter firewall to allow legitimate client communications is an effective mitigation. Refer to section “General security recommendations” for further advise on how to keep your system secure.
MitigationABB Firmware A_0 installed on ABB Symphony Plus SD Series CI850 for IEC 61850 communicationabb_psirt
The vulnerabilities announced in this Advisory for ABB Process Automation products require that an attacker has access to the system network and hosts which are generally expected to be protected. Process Control and IEC 61850 networks are NOT recommended to be exposed directly to Internet connections. If these networks are not properly isolated, then connected components may be remotely exploitable as described in this advisory. To exploit the vulnerability, an attacker with remote network access can send a specially crafted packet to the PM 877, CI850 and CI868 modules which causes the fault of these devices. S+ Operations only implements 61850 client services and therefore are not intended to listen to in-coming connection requests. However, if a specially crafted message is sent anyway, it can still cause the 61850-communication driver to crash. The usage of a perimeter firewall to allow legitimate client communications is an effective mitigation. Refer to section “General security recommendations” for further advise on how to keep your system secure.
MitigationABB Firmware A_1 installed on ABB Symphony Plus SD Series CI850 for IEC 61850 communicationabb_psirt
The vulnerabilities announced in this Advisory for ABB Process Automation products require that an attacker has access to the system network and hosts which are generally expected to be protected. Process Control and IEC 61850 networks are NOT recommended to be exposed directly to Internet connections. If these networks are not properly isolated, then connected components may be remotely exploitable as described in this advisory. To exploit the vulnerability, an attacker with remote network access can send a specially crafted packet to the PM 877, CI850 and CI868 modules which causes the fault of these devices. S+ Operations only implements 61850 client services and therefore are not intended to listen to in-coming connection requests. However, if a specially crafted message is sent anyway, it can still cause the 61850-communication driver to crash. The usage of a perimeter firewall to allow legitimate client communications is an effective mitigation. Refer to section “General security recommendations” for further advise on how to keep your system secure.
MitigationABB Firmware A_2.003 installed on ABB Symphony Plus SD Series CI850 for IEC 61850 communicationabb_psirt
The vulnerabilities announced in this Advisory for ABB Process Automation products require that an attacker has access to the system network and hosts which are generally expected to be protected. Process Control and IEC 61850 networks are NOT recommended to be exposed directly to Internet connections. If these networks are not properly isolated, then connected components may be remotely exploitable as described in this advisory. To exploit the vulnerability, an attacker with remote network access can send a specially crafted packet to the PM 877, CI850 and CI868 modules which causes the fault of these devices. S+ Operations only implements 61850 client services and therefore are not intended to listen to in-coming connection requests. However, if a specially crafted message is sent anyway, it can still cause the 61850-communication driver to crash. The usage of a perimeter firewall to allow legitimate client communications is an effective mitigation. Refer to section “General security recommendations” for further advise on how to keep your system secure.
MitigationABB Firmware A_3.005 installed on ABB Symphony Plus SD Series CI850 for IEC 61850 communicationabb_psirt
The vulnerabilities announced in this Advisory for ABB Process Automation products require that an attacker has access to the system network and hosts which are generally expected to be protected. Process Control and IEC 61850 networks are NOT recommended to be exposed directly to Internet connections. If these networks are not properly isolated, then connected components may be remotely exploitable as described in this advisory. To exploit the vulnerability, an attacker with remote network access can send a specially crafted packet to the PM 877, CI850 and CI868 modules which causes the fault of these devices. S+ Operations only implements 61850 client services and therefore are not intended to listen to in-coming connection requests. However, if a specially crafted message is sent anyway, it can still cause the 61850-communication driver to crash. The usage of a perimeter firewall to allow legitimate client communications is an effective mitigation. Refer to section “General security recommendations” for further advise on how to keep your system secure.
MitigationABB Firmware A_4.001 installed on ABB Symphony Plus SD Series CI850 for IEC 61850 communicationabb_psirt
The vulnerabilities announced in this Advisory for ABB Process Automation products require that an attacker has access to the system network and hosts which are generally expected to be protected. Process Control and IEC 61850 networks are NOT recommended to be exposed directly to Internet connections. If these networks are not properly isolated, then connected components may be remotely exploitable as described in this advisory. To exploit the vulnerability, an attacker with remote network access can send a specially crafted packet to the PM 877, CI850 and CI868 modules which causes the fault of these devices. S+ Operations only implements 61850 client services and therefore are not intended to listen to in-coming connection requests. However, if a specially crafted message is sent anyway, it can still cause the 61850-communication driver to crash. The usage of a perimeter firewall to allow legitimate client communications is an effective mitigation. Refer to section “General security recommendations” for further advise on how to keep your system secure.
MitigationABB Firmware B_0.005 installed on ABB Symphony Plus SD Series CI850 for IEC 61850 communicationabb_psirt
The vulnerabilities announced in this Advisory for ABB Process Automation products require that an attacker has access to the system network and hosts which are generally expected to be protected. Process Control and IEC 61850 networks are NOT recommended to be exposed directly to Internet connections. If these networks are not properly isolated, then connected components may be remotely exploitable as described in this advisory. To exploit the vulnerability, an attacker with remote network access can send a specially crafted packet to the PM 877, CI850 and CI868 modules which causes the fault of these devices. S+ Operations only implements 61850 client services and therefore are not intended to listen to in-coming connection requests. However, if a specially crafted message is sent anyway, it can still cause the 61850-communication driver to crash. The usage of a perimeter firewall to allow legitimate client communications is an effective mitigation. Refer to section “General security recommendations” for further advise on how to keep your system secure.
MitigationABB Firmware 2.1 and related service packs installed on ABB S+ Operations using IEC 61850 connectivitycisa_csaf_ot
The vulnerabilities announced in this Advisory for ABB Process Automation products require that an attacker has access to the system network and hosts which are generally expected to be protected. Process Control and IEC 61850 networks are NOT recommended to be exposed directly to Internet connections. If these networks are not properly isolated, then connected components may be remotely exploitable as described in this advisory. To exploit the vulnerability, an attacker with remote network access can send a specially crafted packet to the PM 877, CI850 and CI868 modules which causes the fault of these devices. S+ Operations only implements 61850 client services and therefore are not intended to listen to in-coming connection requests. However, if a specially crafted message is sent anyway, it can still cause the 61850-communication driver to crash. The usage of a perimeter firewall to allow legitimate client communications is an effective mitigation. Refer to section “General security recommendations” for further advise on how to keep your system secure.
MitigationABB Firmware 2.2 and related service packs installed on ABB S+ Operations using IEC 61850 connectivitycisa_csaf_ot
The vulnerabilities announced in this Advisory for ABB Process Automation products require that an attacker has access to the system network and hosts which are generally expected to be protected. Process Control and IEC 61850 networks are NOT recommended to be exposed directly to Internet connections. If these networks are not properly isolated, then connected components may be remotely exploitable as described in this advisory. To exploit the vulnerability, an attacker with remote network access can send a specially crafted packet to the PM 877, CI850 and CI868 modules which causes the fault of these devices. S+ Operations only implements 61850 client services and therefore are not intended to listen to in-coming connection requests. However, if a specially crafted message is sent anyway, it can still cause the 61850-communication driver to crash. The usage of a perimeter firewall to allow legitimate client communications is an effective mitigation. Refer to section “General security recommendations” for further advise on how to keep your system secure.
MitigationABB Firmware 2.3 installed on ABB S+ Operations using IEC 61850 connectivitycisa_csaf_ot
The vulnerabilities announced in this Advisory for ABB Process Automation products require that an attacker has access to the system network and hosts which are generally expected to be protected. Process Control and IEC 61850 networks are NOT recommended to be exposed directly to Internet connections. If these networks are not properly isolated, then connected components may be remotely exploitable as described in this advisory. To exploit the vulnerability, an attacker with remote network access can send a specially crafted packet to the PM 877, CI850 and CI868 modules which causes the fault of these devices. S+ Operations only implements 61850 client services and therefore are not intended to listen to in-coming connection requests. However, if a specially crafted message is sent anyway, it can still cause the 61850-communication driver to crash. The usage of a perimeter firewall to allow legitimate client communications is an effective mitigation. Refer to section “General security recommendations” for further advise on how to keep your system secure.
MitigationABB Firmware 3.3 and related service packs installed on ABB S+ Operations using IEC 61850 connectivitycisa_csaf_ot
The vulnerabilities announced in this Advisory for ABB Process Automation products require that an attacker has access to the system network and hosts which are generally expected to be protected. Process Control and IEC 61850 networks are NOT recommended to be exposed directly to Internet connections. If these networks are not properly isolated, then connected components may be remotely exploitable as described in this advisory. To exploit the vulnerability, an attacker with remote network access can send a specially crafted packet to the PM 877, CI850 and CI868 modules which causes the fault of these devices. S+ Operations only implements 61850 client services and therefore are not intended to listen to in-coming connection requests. However, if a specially crafted message is sent anyway, it can still cause the 61850-communication driver to crash. The usage of a perimeter firewall to allow legitimate client communications is an effective mitigation. Refer to section “General security recommendations” for further advise on how to keep your system secure.
MitigationABB Firmware <=1.0031.0 (AC800M version 6.1.0-x) installed on ABB AC800M Product line (System 800xA) CI868 for IEC 61850 communicationcisa_csaf_ot
The vulnerabilities announced in this Advisory for ABB Process Automation products require that an attacker has access to the system network and hosts which are generally expected to be protected. Process Control and IEC 61850 networks are NOT recommended to be exposed directly to Internet connections. If these networks are not properly isolated, then connected components may be remotely exploitable as described in this advisory. To exploit the vulnerability, an attacker with remote network access can send a specially crafted packet to the PM 877, CI850 and CI868 modules which causes the fault of these devices. S+ Operations only implements 61850 client services and therefore are not intended to listen to in-coming connection requests. However, if a specially crafted message is sent anyway, it can still cause the 61850-communication driver to crash. The usage of a perimeter firewall to allow legitimate client communications is an effective mitigation. Refer to section “General security recommendations” for further advise on how to keep your system secure.
MitigationABB Firmware <=6.0.0303.0 (AC800M version 6.0.0-x) installed on ABB AC800M Product line (System 800xA) CI868 for IEC 61850 communicationcisa_csaf_ot
The vulnerabilities announced in this Advisory for ABB Process Automation products require that an attacker has access to the system network and hosts which are generally expected to be protected. Process Control and IEC 61850 networks are NOT recommended to be exposed directly to Internet connections. If these networks are not properly isolated, then connected components may be remotely exploitable as described in this advisory. To exploit the vulnerability, an attacker with remote network access can send a specially crafted packet to the PM 877, CI850 and CI868 modules which causes the fault of these devices. S+ Operations only implements 61850 client services and therefore are not intended to listen to in-coming connection requests. However, if a specially crafted message is sent anyway, it can still cause the 61850-communication driver to crash. The usage of a perimeter firewall to allow legitimate client communications is an effective mitigation. Refer to section “General security recommendations” for further advise on how to keep your system secure.
MitigationABB Firmware <=6.1.1004.0 AC800M version 6.1.1-0 and 6.1.1-1) installed on ABB AC800M Product line (System 800xA) CI868 for IEC 61850 communicationcisa_csaf_ot
The vulnerabilities announced in this Advisory for ABB Process Automation products require that an attacker has access to the system network and hosts which are generally expected to be protected. Process Control and IEC 61850 networks are NOT recommended to be exposed directly to Internet connections. If these networks are not properly isolated, then connected components may be remotely exploitable as described in this advisory. To exploit the vulnerability, an attacker with remote network access can send a specially crafted packet to the PM 877, CI850 and CI868 modules which causes the fault of these devices. S+ Operations only implements 61850 client services and therefore are not intended to listen to in-coming connection requests. However, if a specially crafted message is sent anyway, it can still cause the 61850-communication driver to crash. The usage of a perimeter firewall to allow legitimate client communications is an effective mitigation. Refer to section “General security recommendations” for further advise on how to keep your system secure.
MitigationABB Firmware <=6.1.1202.0 (AC800M version 6.1.1-2) installed on ABB AC800M Product line (System 800xA) CI868 for IEC 61850 communicationcisa_csaf_ot
The vulnerabilities announced in this Advisory for ABB Process Automation products require that an attacker has access to the system network and hosts which are generally expected to be protected. Process Control and IEC 61850 networks are NOT recommended to be exposed directly to Internet connections. If these networks are not properly isolated, then connected components may be remotely exploitable as described in this advisory. To exploit the vulnerability, an attacker with remote network access can send a specially crafted packet to the PM 877, CI850 and CI868 modules which causes the fault of these devices. S+ Operations only implements 61850 client services and therefore are not intended to listen to in-coming connection requests. However, if a specially crafted message is sent anyway, it can still cause the 61850-communication driver to crash. The usage of a perimeter firewall to allow legitimate client communications is an effective mitigation. Refer to section “General security recommendations” for further advise on how to keep your system secure.
MitigationABB Firmware <=6.2.0006.0 (AC800M version 6.2.0-0) installed on ABB AC800M Product line (System 800xA) CI868 for IEC 61850 communicationcisa_csaf_ot
The vulnerabilities announced in this Advisory for ABB Process Automation products require that an attacker has access to the system network and hosts which are generally expected to be protected. Process Control and IEC 61850 networks are NOT recommended to be exposed directly to Internet connections. If these networks are not properly isolated, then connected components may be remotely exploitable as described in this advisory. To exploit the vulnerability, an attacker with remote network access can send a specially crafted packet to the PM 877, CI850 and CI868 modules which causes the fault of these devices. S+ Operations only implements 61850 client services and therefore are not intended to listen to in-coming connection requests. However, if a specially crafted message is sent anyway, it can still cause the 61850-communication driver to crash. The usage of a perimeter firewall to allow legitimate client communications is an effective mitigation. Refer to section “General security recommendations” for further advise on how to keep your system secure.
MitigationABB Firmware >=3.10|<=3.52 installed on ABB Symphony Plus MR (Melody Rack) PM 877 for IEC 61850 communicationcisa_csaf_ot
The vulnerabilities announced in this Advisory for ABB Process Automation products require that an attacker has access to the system network and hosts which are generally expected to be protected. Process Control and IEC 61850 networks are NOT recommended to be exposed directly to Internet connections. If these networks are not properly isolated, then connected components may be remotely exploitable as described in this advisory. To exploit the vulnerability, an attacker with remote network access can send a specially crafted packet to the PM 877, CI850 and CI868 modules which causes the fault of these devices. S+ Operations only implements 61850 client services and therefore are not intended to listen to in-coming connection requests. However, if a specially crafted message is sent anyway, it can still cause the 61850-communication driver to crash. The usage of a perimeter firewall to allow legitimate client communications is an effective mitigation. Refer to section “General security recommendations” for further advise on how to keep your system secure.
MitigationABB Firmware A_0 installed on ABB Symphony Plus SD Series CI850 for IEC 61850 communicationcisa_csaf_ot
The vulnerabilities announced in this Advisory for ABB Process Automation products require that an attacker has access to the system network and hosts which are generally expected to be protected. Process Control and IEC 61850 networks are NOT recommended to be exposed directly to Internet connections. If these networks are not properly isolated, then connected components may be remotely exploitable as described in this advisory. To exploit the vulnerability, an attacker with remote network access can send a specially crafted packet to the PM 877, CI850 and CI868 modules which causes the fault of these devices. S+ Operations only implements 61850 client services and therefore are not intended to listen to in-coming connection requests. However, if a specially crafted message is sent anyway, it can still cause the 61850-communication driver to crash. The usage of a perimeter firewall to allow legitimate client communications is an effective mitigation. Refer to section “General security recommendations” for further advise on how to keep your system secure.
MitigationABB Firmware A_1 installed on ABB Symphony Plus SD Series CI850 for IEC 61850 communicationcisa_csaf_ot
The vulnerabilities announced in this Advisory for ABB Process Automation products require that an attacker has access to the system network and hosts which are generally expected to be protected. Process Control and IEC 61850 networks are NOT recommended to be exposed directly to Internet connections. If these networks are not properly isolated, then connected components may be remotely exploitable as described in this advisory. To exploit the vulnerability, an attacker with remote network access can send a specially crafted packet to the PM 877, CI850 and CI868 modules which causes the fault of these devices. S+ Operations only implements 61850 client services and therefore are not intended to listen to in-coming connection requests. However, if a specially crafted message is sent anyway, it can still cause the 61850-communication driver to crash. The usage of a perimeter firewall to allow legitimate client communications is an effective mitigation. Refer to section “General security recommendations” for further advise on how to keep your system secure.
MitigationABB Firmware A_2.003 installed on ABB Symphony Plus SD Series CI850 for IEC 61850 communicationcisa_csaf_ot
The vulnerabilities announced in this Advisory for ABB Process Automation products require that an attacker has access to the system network and hosts which are generally expected to be protected. Process Control and IEC 61850 networks are NOT recommended to be exposed directly to Internet connections. If these networks are not properly isolated, then connected components may be remotely exploitable as described in this advisory. To exploit the vulnerability, an attacker with remote network access can send a specially crafted packet to the PM 877, CI850 and CI868 modules which causes the fault of these devices. S+ Operations only implements 61850 client services and therefore are not intended to listen to in-coming connection requests. However, if a specially crafted message is sent anyway, it can still cause the 61850-communication driver to crash. The usage of a perimeter firewall to allow legitimate client communications is an effective mitigation. Refer to section “General security recommendations” for further advise on how to keep your system secure.
MitigationABB Firmware A_3.005 installed on ABB Symphony Plus SD Series CI850 for IEC 61850 communicationcisa_csaf_ot
The vulnerabilities announced in this Advisory for ABB Process Automation products require that an attacker has access to the system network and hosts which are generally expected to be protected. Process Control and IEC 61850 networks are NOT recommended to be exposed directly to Internet connections. If these networks are not properly isolated, then connected components may be remotely exploitable as described in this advisory. To exploit the vulnerability, an attacker with remote network access can send a specially crafted packet to the PM 877, CI850 and CI868 modules which causes the fault of these devices. S+ Operations only implements 61850 client services and therefore are not intended to listen to in-coming connection requests. However, if a specially crafted message is sent anyway, it can still cause the 61850-communication driver to crash. The usage of a perimeter firewall to allow legitimate client communications is an effective mitigation. Refer to section “General security recommendations” for further advise on how to keep your system secure.
MitigationABB Firmware A_4.001 installed on ABB Symphony Plus SD Series CI850 for IEC 61850 communicationcisa_csaf_ot
The vulnerabilities announced in this Advisory for ABB Process Automation products require that an attacker has access to the system network and hosts which are generally expected to be protected. Process Control and IEC 61850 networks are NOT recommended to be exposed directly to Internet connections. If these networks are not properly isolated, then connected components may be remotely exploitable as described in this advisory. To exploit the vulnerability, an attacker with remote network access can send a specially crafted packet to the PM 877, CI850 and CI868 modules which causes the fault of these devices. S+ Operations only implements 61850 client services and therefore are not intended to listen to in-coming connection requests. However, if a specially crafted message is sent anyway, it can still cause the 61850-communication driver to crash. The usage of a perimeter firewall to allow legitimate client communications is an effective mitigation. Refer to section “General security recommendations” for further advise on how to keep your system secure.
MitigationABB Firmware B_0.005 installed on ABB Symphony Plus SD Series CI850 for IEC 61850 communicationcisa_csaf_ot
The vulnerabilities announced in this Advisory for ABB Process Automation products require that an attacker has access to the system network and hosts which are generally expected to be protected. Process Control and IEC 61850 networks are NOT recommended to be exposed directly to Internet connections. If these networks are not properly isolated, then connected components may be remotely exploitable as described in this advisory. To exploit the vulnerability, an attacker with remote network access can send a specially crafted packet to the PM 877, CI850 and CI868 modules which causes the fault of these devices. S+ Operations only implements 61850 client services and therefore are not intended to listen to in-coming connection requests. However, if a specially crafted message is sent anyway, it can still cause the 61850-communication driver to crash. The usage of a perimeter firewall to allow legitimate client communications is an effective mitigation. Refer to section “General security recommendations” for further advise on how to keep your system secure.
WorkaroundABB Firmware 2.1 and related service packs installed on ABB S+ Operations using IEC 61850 connectivityabb_psirt
No workarounds are available. Assess the installation specific risk based on this advisory. Use the recommendations described under “Mitigating factors” or “Recommended immediate actions”.
WorkaroundABB Firmware 2.2 and related service packs installed on ABB S+ Operations using IEC 61850 connectivityabb_psirt
No workarounds are available. Assess the installation specific risk based on this advisory. Use the recommendations described under “Mitigating factors” or “Recommended immediate actions”.
WorkaroundABB Firmware 2.3 installed on ABB S+ Operations using IEC 61850 connectivityabb_psirt
No workarounds are available. Assess the installation specific risk based on this advisory. Use the recommendations described under “Mitigating factors” or “Recommended immediate actions”.
WorkaroundABB Firmware 3.3 and related service packs installed on ABB S+ Operations using IEC 61850 connectivityabb_psirt
No workarounds are available. Assess the installation specific risk based on this advisory. Use the recommendations described under “Mitigating factors” or “Recommended immediate actions”.
WorkaroundABB Firmware <=1.0031.0 (AC800M version 6.1.0-x) installed on ABB AC800M Product line (System 800xA) CI868 for IEC 61850 communicationabb_psirt
No workarounds are available. Assess the installation specific risk based on this advisory. Use the recommendations described under “Mitigating factors” or “Recommended immediate actions”.
WorkaroundABB Firmware <=6.0.0303.0 (AC800M version 6.0.0-x) installed on ABB AC800M Product line (System 800xA) CI868 for IEC 61850 communicationabb_psirt
No workarounds are available. Assess the installation specific risk based on this advisory. Use the recommendations described under “Mitigating factors” or “Recommended immediate actions”.
WorkaroundABB Firmware <=6.1.1004.0 AC800M version 6.1.1-0 and 6.1.1-1) installed on ABB AC800M Product line (System 800xA) CI868 for IEC 61850 communicationabb_psirt
No workarounds are available. Assess the installation specific risk based on this advisory. Use the recommendations described under “Mitigating factors” or “Recommended immediate actions”.
WorkaroundABB Firmware <=6.1.1202.0 (AC800M version 6.1.1-2) installed on ABB AC800M Product line (System 800xA) CI868 for IEC 61850 communicationabb_psirt
No workarounds are available. Assess the installation specific risk based on this advisory. Use the recommendations described under “Mitigating factors” or “Recommended immediate actions”.
WorkaroundABB Firmware <=6.2.0006.0 (AC800M version 6.2.0-0) installed on ABB AC800M Product line (System 800xA) CI868 for IEC 61850 communicationabb_psirt
No workarounds are available. Assess the installation specific risk based on this advisory. Use the recommendations described under “Mitigating factors” or “Recommended immediate actions”.
WorkaroundABB Firmware >=3.10|<=3.52 installed on ABB Symphony Plus MR (Melody Rack) PM 877 for IEC 61850 communicationabb_psirt
No workarounds are available. Assess the installation specific risk based on this advisory. Use the recommendations described under “Mitigating factors” or “Recommended immediate actions”.
WorkaroundABB Firmware A_0 installed on ABB Symphony Plus SD Series CI850 for IEC 61850 communicationabb_psirt
No workarounds are available. Assess the installation specific risk based on this advisory. Use the recommendations described under “Mitigating factors” or “Recommended immediate actions”.
WorkaroundABB Firmware A_1 installed on ABB Symphony Plus SD Series CI850 for IEC 61850 communicationabb_psirt
No workarounds are available. Assess the installation specific risk based on this advisory. Use the recommendations described under “Mitigating factors” or “Recommended immediate actions”.
WorkaroundABB Firmware A_2.003 installed on ABB Symphony Plus SD Series CI850 for IEC 61850 communicationabb_psirt
No workarounds are available. Assess the installation specific risk based on this advisory. Use the recommendations described under “Mitigating factors” or “Recommended immediate actions”.
WorkaroundABB Firmware A_3.005 installed on ABB Symphony Plus SD Series CI850 for IEC 61850 communicationabb_psirt
No workarounds are available. Assess the installation specific risk based on this advisory. Use the recommendations described under “Mitigating factors” or “Recommended immediate actions”.
WorkaroundABB Firmware A_4.001 installed on ABB Symphony Plus SD Series CI850 for IEC 61850 communicationabb_psirt
No workarounds are available. Assess the installation specific risk based on this advisory. Use the recommendations described under “Mitigating factors” or “Recommended immediate actions”.
WorkaroundABB Firmware B_0.005 installed on ABB Symphony Plus SD Series CI850 for IEC 61850 communicationabb_psirt
No workarounds are available. Assess the installation specific risk based on this advisory. Use the recommendations described under “Mitigating factors” or “Recommended immediate actions”.
WorkaroundABB Firmware 2.1 and related service packs installed on ABB S+ Operations using IEC 61850 connectivitycisa_csaf_ot
No workarounds are available. Assess the installation specific risk based on this advisory. Use the recommendations described under “Mitigating factors” or “Recommended immediate actions”.
WorkaroundABB Firmware 2.2 and related service packs installed on ABB S+ Operations using IEC 61850 connectivitycisa_csaf_ot
No workarounds are available. Assess the installation specific risk based on this advisory. Use the recommendations described under “Mitigating factors” or “Recommended immediate actions”.
WorkaroundABB Firmware 2.3 installed on ABB S+ Operations using IEC 61850 connectivitycisa_csaf_ot
No workarounds are available. Assess the installation specific risk based on this advisory. Use the recommendations described under “Mitigating factors” or “Recommended immediate actions”.
WorkaroundABB Firmware 3.3 and related service packs installed on ABB S+ Operations using IEC 61850 connectivitycisa_csaf_ot
No workarounds are available. Assess the installation specific risk based on this advisory. Use the recommendations described under “Mitigating factors” or “Recommended immediate actions”.
WorkaroundABB Firmware <=1.0031.0 (AC800M version 6.1.0-x) installed on ABB AC800M Product line (System 800xA) CI868 for IEC 61850 communicationcisa_csaf_ot
No workarounds are available. Assess the installation specific risk based on this advisory. Use the recommendations described under “Mitigating factors” or “Recommended immediate actions”.
WorkaroundABB Firmware <=6.0.0303.0 (AC800M version 6.0.0-x) installed on ABB AC800M Product line (System 800xA) CI868 for IEC 61850 communicationcisa_csaf_ot
No workarounds are available. Assess the installation specific risk based on this advisory. Use the recommendations described under “Mitigating factors” or “Recommended immediate actions”.
WorkaroundABB Firmware <=6.1.1004.0 AC800M version 6.1.1-0 and 6.1.1-1) installed on ABB AC800M Product line (System 800xA) CI868 for IEC 61850 communicationcisa_csaf_ot
No workarounds are available. Assess the installation specific risk based on this advisory. Use the recommendations described under “Mitigating factors” or “Recommended immediate actions”.
WorkaroundABB Firmware <=6.1.1202.0 (AC800M version 6.1.1-2) installed on ABB AC800M Product line (System 800xA) CI868 for IEC 61850 communicationcisa_csaf_ot
No workarounds are available. Assess the installation specific risk based on this advisory. Use the recommendations described under “Mitigating factors” or “Recommended immediate actions”.
WorkaroundABB Firmware <=6.2.0006.0 (AC800M version 6.2.0-0) installed on ABB AC800M Product line (System 800xA) CI868 for IEC 61850 communicationcisa_csaf_ot
No workarounds are available. Assess the installation specific risk based on this advisory. Use the recommendations described under “Mitigating factors” or “Recommended immediate actions”.
WorkaroundABB Firmware >=3.10|<=3.52 installed on ABB Symphony Plus MR (Melody Rack) PM 877 for IEC 61850 communicationcisa_csaf_ot
No workarounds are available. Assess the installation specific risk based on this advisory. Use the recommendations described under “Mitigating factors” or “Recommended immediate actions”.
WorkaroundABB Firmware A_0 installed on ABB Symphony Plus SD Series CI850 for IEC 61850 communicationcisa_csaf_ot
No workarounds are available. Assess the installation specific risk based on this advisory. Use the recommendations described under “Mitigating factors” or “Recommended immediate actions”.
WorkaroundABB Firmware A_1 installed on ABB Symphony Plus SD Series CI850 for IEC 61850 communicationcisa_csaf_ot
No workarounds are available. Assess the installation specific risk based on this advisory. Use the recommendations described under “Mitigating factors” or “Recommended immediate actions”.
WorkaroundABB Firmware A_2.003 installed on ABB Symphony Plus SD Series CI850 for IEC 61850 communicationcisa_csaf_ot
No workarounds are available. Assess the installation specific risk based on this advisory. Use the recommendations described under “Mitigating factors” or “Recommended immediate actions”.
WorkaroundABB Firmware A_3.005 installed on ABB Symphony Plus SD Series CI850 for IEC 61850 communicationcisa_csaf_ot
No workarounds are available. Assess the installation specific risk based on this advisory. Use the recommendations described under “Mitigating factors” or “Recommended immediate actions”.
WorkaroundABB Firmware A_4.001 installed on ABB Symphony Plus SD Series CI850 for IEC 61850 communicationcisa_csaf_ot
No workarounds are available. Assess the installation specific risk based on this advisory. Use the recommendations described under “Mitigating factors” or “Recommended immediate actions”.
WorkaroundABB Firmware B_0.005 installed on ABB Symphony Plus SD Series CI850 for IEC 61850 communicationcisa_csaf_ot
No workarounds are available. Assess the installation specific risk based on this advisory. Use the recommendations described under “Mitigating factors” or “Recommended immediate actions”.

cvss

Technical severity, 0–10. One row per scoring source.

7.1

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.9–7.1

v3.16.5mediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · CISA US

v3.16.5mediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · cybersecurity@ch.abb.comexploitability 2.8 · impact 3.6

v3.16.5mediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · ABB PSIRT

v4.07.1highCVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:Nsecondary · ENISA EU

v4.07.1highCVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · cybersecurity@ch.abb.com

v4.04.9mediumCVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-1284USCWE-1284USCWE-1284US

affected products (64)

Products and version ranges known to be affected.

showing 20 of 64

advisories (3)

Vendor and ecosystem advisories describing this.

7PAA020125Denial of Service Vulnerabilities in System 800xA, Symphony® Plus IEC 61850 communication stack2026-04-13csaf · abb_psirtCH
This vulnerability was privately reported relating to ABB’s implementation of the IEC 61850 communication stack for MMS client applications used in some Automation control system products. Note: IEC 61850 communication typically supports MMS and GOOSE protocols. Some ABB products support both, others only MMS (e.g. S+ Operations and PM 877). In any case, GOOSE communication is not impacted by this reported vulnerability. If an attacker gains access to a site’s IEC 61850 network, then exploiting this vulnerability will result in a device fault (PM 877, CI850 and CI868 modules) and will require a manual restart. If this attack is directed at a S+ Operations node running IEC 61850 connectivity, this will result in a crash in the IEC 61850 communication driver which, if continued a repeating basis, will also result in a denial-of-service situation. Note that this does not have an impact on the overall availability and functionality of the S+ Operations node, only the IEC 61850 communication function. The System 800xA IEC61850 Connect is not affected.
WID-SEC-W-2026-1086ABB 800xA CI868 (für AC 800M) und PM877 (Symphony Plus MR): Schwachstelle ermöglicht Denial of ServiceDeutsch2026-04-13csaf · cert_bundDE
Ein Angreifer aus einem angrenzenden Netzwerk kann eine Schwachstelle in ABB 800xA und ABB Symphony Melody ausnutzen, um einen Denial of Service Angriff durchzuführen.
ICSA-26-120-01ABB System 800xA, Symphony Plus IEC 618502026-04-13icsa · cisa_csaf_otUS
This vulnerability was privately reported relating to ABB’s implementation of the IEC 61850 communication stack for MMS client applications used in some Automation control system products. Note: IEC 61850 communication typically supports MMS and GOOSE protocols. Some ABB products support both, others only MMS (e.g. S+ Operations and PM 877). In any case, GOOSE communication is not impacted by this reported vulnerability. If an attacker gains access to a site’s IEC 61850 network, then exploiting this vulnerability will result in a device fault (PM 877, CI850 and CI868 modules) and will require a manual restart. If this attack is directed at a S+ Operations node running IEC 61850 connectivity, this will result in a crash in the IEC 61850 communication driver which, if continued a repeating basis, will also result in a denial-of-service situation. Note that this does not have an impact on the overall availability and functionality of the S+ Operations node, only the IEC 61850 communication function. The System 800xA IEC61850 Connect is not affected.

also known as (2)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd abb_psirt cert_bund cisa_csaf_ot NVD CVE.org MITRE

published 2026-04-13modified 2026-06-17

references (3)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan