CVE-2021-31882

mediumpriority · track · 31stack campaign · NUCLEUS:13EPSS 0.015 · 75 %ileDEEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.52% (75th) EPSS

CVSS 5 · medium

Is it mine?

94 products

Check your exposure

Who says so?

6 sources

cnnvd · enisa_euvd · cisa_csaf_ot · siemens_psirt

EPSS · scored 2026-10-27

A vulnerability has been identified in Capital Embedded AR Classic 431-422 (All versions), Capital Embedded AR Classic R20-11 (All versions < V2303). The DHCP client application does not validate the length of the Domain Name Server IP option(s) (0x06) when processing DHCP ACK packets. This may lead to Denial-of-Service conditions. (FSMD-2021-0011)

remediations

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

A vendor fix is available.

FixedNucleus ReadyStart V3siemens_psirt
Update to V2017.02.4 or later version
https://support.sw.siemens.com/en-US/product/1009925838/
FixedNucleus Source Codesiemens_psirt
Contact customer support to receive patch and update information
FixedAPOGEE PXC Compact (BACnet)siemens_psirt
Update to V3.5.4 or later version
FixedAPOGEE PXC Compact (P2 Ethernet)siemens_psirt
Update to V2.8.19 or later version
FixedAPOGEE PXC Modular (BACnet)siemens_psirt
Update to V3.5.4 or later version
FixedAPOGEE PXC Modular (P2 Ethernet)siemens_psirt
Update to V2.8.19 or later version
FixedDesigo PXC00-E.Dsiemens_psirt
Update to V6.30.016 or later version
https://support.industry.siemens.com/cs/ww/en/view/109810577
FixedDesigo PXC00-Usiemens_psirt
Update to V6.30.016 or later version
https://support.industry.siemens.com/cs/ww/en/view/109810577
FixedDesigo PXC001-E.Dsiemens_psirt
Update to V6.30.016 or later version
https://support.industry.siemens.com/cs/ww/en/view/109810577
FixedDesigo PXC100-E.Dsiemens_psirt
Update to V6.30.016 or later version
https://support.industry.siemens.com/cs/ww/en/view/109810577
FixedDesigo PXC12-E.Dsiemens_psirt
Update to V6.30.016 or later version
https://support.industry.siemens.com/cs/ww/en/view/109810577
FixedDesigo PXC128-Usiemens_psirt
Update to V6.30.016 or later version
https://support.industry.siemens.com/cs/ww/en/view/109810577
FixedDesigo PXC200-E.Dsiemens_psirt
Update to V6.30.016 or later version
https://support.industry.siemens.com/cs/ww/en/view/109810577
FixedDesigo PXC22-E.Dsiemens_psirt
Update to V6.30.016 or later version
https://support.industry.siemens.com/cs/ww/en/view/109810577
FixedDesigo PXC22.1-E.Dsiemens_psirt
Update to V6.30.016 or later version
https://support.industry.siemens.com/cs/ww/en/view/109810577
FixedDesigo PXC36.1-E.Dsiemens_psirt
Update to V6.30.016 or later version
https://support.industry.siemens.com/cs/ww/en/view/109810577
FixedDesigo PXC50-E.Dsiemens_psirt
Update to V6.30.016 or later version
https://support.industry.siemens.com/cs/ww/en/view/109810577
FixedDesigo PXC64-Usiemens_psirt
Update to V6.30.016 or later version
https://support.industry.siemens.com/cs/ww/en/view/109810577
FixedDesigo PXM20-Esiemens_psirt
Update to V6.30.016 or later version
https://support.industry.siemens.com/cs/ww/en/view/109810577
FixedTALON TC Compact (BACnet)siemens_psirt
Update to V3.5.4 or later version
FixedTALON TC Modular (BACnet)siemens_psirt
Update to V3.5.4 or later version
FixedCapital Embedded AR Classic R20-11siemens_psirt
Update to V2303 or later version
Fixedwago_psirt
For fieldbus coupler: - 750-332 - 750-362/xxx-xxx - 750-363/xxx-xxx - 750-364/xxx-xxx - 750-365/xxx-xxx For PLCs: - 750-823 - 750-832/xxx-xxx - 750-862 - 750-890/xxx-xxx - 750-891 - 750-893 We recommend all effected users to update to the firmware version listed below: | Article Number | Fixed in Firmware Version | Availability | |----------------------|----------------------------|---------------------------| | 750-823 | >=FW10 | January 2022 | | 750-832/000-00x | >=FW10 | After BACnet certification| | 750-862 | >=FW10 | January 2022 | | 750-890/xxx-xxx | >=FW10 | January 2022 | | 750-891 | >=FW10 | January 2022 | | 750-893 | >=FW10 | January 2022 | | 750-332 | >=FW10 | After BACnet certification| | 750-362/xxx-xxx | >=FW10 | January 2022 | | 750-363/xxx-xxx | >=FW10 | January 2022 | | 750-364/xxx-xxx | >=FW10 | January 2022 | | 750-365/xxx-xxx | >=FW10 | January 2022 |
FixedNucleus ReadyStart V3cisa_csaf_ot
Update to V2017.02.4 or later version
https://support.sw.siemens.com/en-US/product/1009925838/
FixedNucleus Source Codecisa_csaf_ot
Contact customer support to receive patch and update information
FixedAPOGEE PXC Compact (BACnet)cisa_csaf_ot
Update to V3.5.4 or later version
FixedAPOGEE PXC Compact (P2 Ethernet)cisa_csaf_ot
Update to V2.8.19 or later version
FixedAPOGEE PXC Modular (BACnet)cisa_csaf_ot
Update to V3.5.4 or later version
FixedAPOGEE PXC Modular (P2 Ethernet)cisa_csaf_ot
Update to V2.8.19 or later version
FixedDesigo PXC00-E.Dcisa_csaf_ot
Update to V6.30.016 or later version
https://support.industry.siemens.com/cs/ww/en/view/109810577
FixedDesigo PXC00-Ucisa_csaf_ot
Update to V6.30.016 or later version
https://support.industry.siemens.com/cs/ww/en/view/109810577
FixedDesigo PXC001-E.Dcisa_csaf_ot
Update to V6.30.016 or later version
https://support.industry.siemens.com/cs/ww/en/view/109810577
FixedDesigo PXC100-E.Dcisa_csaf_ot
Update to V6.30.016 or later version
https://support.industry.siemens.com/cs/ww/en/view/109810577
FixedDesigo PXC12-E.Dcisa_csaf_ot
Update to V6.30.016 or later version
https://support.industry.siemens.com/cs/ww/en/view/109810577
FixedDesigo PXC128-Ucisa_csaf_ot
Update to V6.30.016 or later version
https://support.industry.siemens.com/cs/ww/en/view/109810577
FixedDesigo PXC200-E.Dcisa_csaf_ot
Update to V6.30.016 or later version
https://support.industry.siemens.com/cs/ww/en/view/109810577
FixedDesigo PXC22-E.Dcisa_csaf_ot
Update to V6.30.016 or later version
https://support.industry.siemens.com/cs/ww/en/view/109810577
FixedDesigo PXC22.1-E.Dcisa_csaf_ot
Update to V6.30.016 or later version
https://support.industry.siemens.com/cs/ww/en/view/109810577
FixedDesigo PXC36.1-E.Dcisa_csaf_ot
Update to V6.30.016 or later version
https://support.industry.siemens.com/cs/ww/en/view/109810577
FixedDesigo PXC50-E.Dcisa_csaf_ot
Update to V6.30.016 or later version
https://support.industry.siemens.com/cs/ww/en/view/109810577
FixedDesigo PXC64-Ucisa_csaf_ot
Update to V6.30.016 or later version
https://support.industry.siemens.com/cs/ww/en/view/109810577
FixedDesigo PXM20-Ecisa_csaf_ot
Update to V6.30.016 or later version
https://support.industry.siemens.com/cs/ww/en/view/109810577
FixedTALON TC Compact (BACnet)cisa_csaf_ot
Update to V3.5.4 or later version
FixedTALON TC Modular (BACnet)cisa_csaf_ot
Update to V3.5.4 or later version
FixedCapital Embedded AR Classic R20-11cisa_csaf_ot
Update to V2303 or later version
MitigationNucleus NETsiemens_psirt
Contact customer support or your local Nucleus Sales team for mitigation advice
MitigationAPOGEE MBC (PPC) (BACnet)siemens_psirt
CVE-2021-31881, CVE-2021-31882, CVE-2021-31883, CVE-2021-31884: Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE/TALON and Desigo products.)
MitigationAPOGEE MBC (PPC) (P2 Ethernet)siemens_psirt
CVE-2021-31881, CVE-2021-31882, CVE-2021-31883, CVE-2021-31884: Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE/TALON and Desigo products.)
MitigationAPOGEE MEC (PPC) (BACnet)siemens_psirt
CVE-2021-31881, CVE-2021-31882, CVE-2021-31883, CVE-2021-31884: Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE/TALON and Desigo products.)
MitigationAPOGEE MEC (PPC) (P2 Ethernet)siemens_psirt
CVE-2021-31881, CVE-2021-31882, CVE-2021-31883, CVE-2021-31884: Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE/TALON and Desigo products.)
MitigationAPOGEE PXC Compact (BACnet)siemens_psirt
CVE-2021-31881, CVE-2021-31882, CVE-2021-31883, CVE-2021-31884: Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE/TALON and Desigo products.)
MitigationAPOGEE PXC Compact (P2 Ethernet)siemens_psirt
CVE-2021-31881, CVE-2021-31882, CVE-2021-31883, CVE-2021-31884: Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE/TALON and Desigo products.)
MitigationAPOGEE PXC Modular (BACnet)siemens_psirt
CVE-2021-31881, CVE-2021-31882, CVE-2021-31883, CVE-2021-31884: Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE/TALON and Desigo products.)
MitigationAPOGEE PXC Modular (P2 Ethernet)siemens_psirt
CVE-2021-31881, CVE-2021-31882, CVE-2021-31883, CVE-2021-31884: Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE/TALON and Desigo products.)
MitigationDesigo PXC00-E.Dsiemens_psirt
CVE-2021-31881, CVE-2021-31882, CVE-2021-31883, CVE-2021-31884: Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE/TALON and Desigo products.)
MitigationDesigo PXC00-Usiemens_psirt
CVE-2021-31881, CVE-2021-31882, CVE-2021-31883, CVE-2021-31884: Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE/TALON and Desigo products.)
MitigationDesigo PXC001-E.Dsiemens_psirt
CVE-2021-31881, CVE-2021-31882, CVE-2021-31883, CVE-2021-31884: Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE/TALON and Desigo products.)
MitigationDesigo PXC100-E.Dsiemens_psirt
CVE-2021-31881, CVE-2021-31882, CVE-2021-31883, CVE-2021-31884: Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE/TALON and Desigo products.)
MitigationDesigo PXC12-E.Dsiemens_psirt
CVE-2021-31881, CVE-2021-31882, CVE-2021-31883, CVE-2021-31884: Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE/TALON and Desigo products.)
MitigationDesigo PXC128-Usiemens_psirt
CVE-2021-31881, CVE-2021-31882, CVE-2021-31883, CVE-2021-31884: Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE/TALON and Desigo products.)
MitigationDesigo PXC200-E.Dsiemens_psirt
CVE-2021-31881, CVE-2021-31882, CVE-2021-31883, CVE-2021-31884: Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE/TALON and Desigo products.)
MitigationDesigo PXC22-E.Dsiemens_psirt
CVE-2021-31881, CVE-2021-31882, CVE-2021-31883, CVE-2021-31884: Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE/TALON and Desigo products.)
MitigationDesigo PXC22.1-E.Dsiemens_psirt
CVE-2021-31881, CVE-2021-31882, CVE-2021-31883, CVE-2021-31884: Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE/TALON and Desigo products.)
MitigationDesigo PXC36.1-E.Dsiemens_psirt
CVE-2021-31881, CVE-2021-31882, CVE-2021-31883, CVE-2021-31884: Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE/TALON and Desigo products.)
MitigationDesigo PXC50-E.Dsiemens_psirt
CVE-2021-31881, CVE-2021-31882, CVE-2021-31883, CVE-2021-31884: Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE/TALON and Desigo products.)
MitigationDesigo PXC64-Usiemens_psirt
CVE-2021-31881, CVE-2021-31882, CVE-2021-31883, CVE-2021-31884: Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE/TALON and Desigo products.)
MitigationDesigo PXM20-Esiemens_psirt
CVE-2021-31881, CVE-2021-31882, CVE-2021-31883, CVE-2021-31884: Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE/TALON and Desigo products.)
MitigationTALON TC Compact (BACnet)siemens_psirt
CVE-2021-31881, CVE-2021-31882, CVE-2021-31883, CVE-2021-31884: Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE/TALON and Desigo products.)
MitigationTALON TC Modular (BACnet)siemens_psirt
CVE-2021-31881, CVE-2021-31882, CVE-2021-31883, CVE-2021-31884: Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE/TALON and Desigo products.)
MitigationCapital Embedded AR Classic 431-422siemens_psirt
Disable DHCP client functionality, if feature not used, by deselecting the TcpIpIpV4General/TcpIpDhcpClientEnabled Pre-Compile configuration option
MitigationCapital Embedded AR Classic R20-11siemens_psirt
Disable DHCP client functionality, if feature not used, by deselecting the TcpIpIpV4General/TcpIpDhcpClientEnabled Pre-Compile configuration option
Mitigationwago_psirt
1. Use general security best practices to protect systems from local and network attacks. 2. Do not allow direct access to the device from untrusted networks. 3. Update to the latest firmware according to the table in chapter solutions. 4. Disable the DHCP, DNS and the FTP port 21. 5. Industrial control systems (ICS) should not be directly accessible from the Internet, but should be protected by consistently applying the defense-in-depth strategy. The BSI provides general information on securing ICS in the ICS Compendium [BSI2013] and on the official BSI website [BSI2021]. For fieldbus coupler: - 750-331 - 750-352/xxx-xxx For PLCs: - 750-829 - 750-831/xxx-xxx - 750-852 - 750-880/xxx-xxx - 750-881 - 750-889 The listed fieldbus coupler and PLCs above are based on Nucleus V1 RTOS. At the moment there are no updates for this version available. Due to this reason WAGO recommends according to the recommendations of the BSI to implement the following measures: 1. Enforce segmentation controls and proper network hygiene to reduce the risk of vulnerable devices. Restrict external communication paths and isolate vulnerable devices in zones as a mitigating measure. 2. Ensure DHCP responses from non-authorized servers are blocked or discarded. 3. Monitor network traffic for anomalies and discard invalid packets. 4. Disable or block FTP, DHCP, DNS especially on critical network segments 5. Please check regularly https://certvde.com/de/ for an update of this Advisory.
Mitigationphoenix_contact_psirt
Phoenix Contact recommends operating network-capable devices in closed networks or protected with a suitable firewall. For detailed information on our recommendations for measures to protect network-capable devices, please refer to our application note: Measures to protect network-capable devices with Ethernet connection
MitigationNucleus NETcisa_csaf_ot
Contact customer support or your local Nucleus Sales team for mitigation advice
MitigationAPOGEE MBC (PPC) (BACnet)cisa_csaf_ot
CVE-2021-31881, CVE-2021-31882, CVE-2021-31883, CVE-2021-31884: Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE/TALON and Desigo products.)
MitigationAPOGEE MBC (PPC) (P2 Ethernet)cisa_csaf_ot
CVE-2021-31881, CVE-2021-31882, CVE-2021-31883, CVE-2021-31884: Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE/TALON and Desigo products.)
MitigationAPOGEE MEC (PPC) (BACnet)cisa_csaf_ot
CVE-2021-31881, CVE-2021-31882, CVE-2021-31883, CVE-2021-31884: Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE/TALON and Desigo products.)
MitigationAPOGEE MEC (PPC) (P2 Ethernet)cisa_csaf_ot
CVE-2021-31881, CVE-2021-31882, CVE-2021-31883, CVE-2021-31884: Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE/TALON and Desigo products.)
MitigationAPOGEE PXC Compact (BACnet)cisa_csaf_ot
CVE-2021-31881, CVE-2021-31882, CVE-2021-31883, CVE-2021-31884: Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE/TALON and Desigo products.)
MitigationAPOGEE PXC Compact (P2 Ethernet)cisa_csaf_ot
CVE-2021-31881, CVE-2021-31882, CVE-2021-31883, CVE-2021-31884: Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE/TALON and Desigo products.)
MitigationAPOGEE PXC Modular (BACnet)cisa_csaf_ot
CVE-2021-31881, CVE-2021-31882, CVE-2021-31883, CVE-2021-31884: Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE/TALON and Desigo products.)
MitigationAPOGEE PXC Modular (P2 Ethernet)cisa_csaf_ot
CVE-2021-31881, CVE-2021-31882, CVE-2021-31883, CVE-2021-31884: Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE/TALON and Desigo products.)
MitigationDesigo PXC00-E.Dcisa_csaf_ot
CVE-2021-31881, CVE-2021-31882, CVE-2021-31883, CVE-2021-31884: Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE/TALON and Desigo products.)
MitigationDesigo PXC00-Ucisa_csaf_ot
CVE-2021-31881, CVE-2021-31882, CVE-2021-31883, CVE-2021-31884: Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE/TALON and Desigo products.)
MitigationDesigo PXC001-E.Dcisa_csaf_ot
CVE-2021-31881, CVE-2021-31882, CVE-2021-31883, CVE-2021-31884: Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE/TALON and Desigo products.)
MitigationDesigo PXC100-E.Dcisa_csaf_ot
CVE-2021-31881, CVE-2021-31882, CVE-2021-31883, CVE-2021-31884: Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE/TALON and Desigo products.)
MitigationDesigo PXC12-E.Dcisa_csaf_ot
CVE-2021-31881, CVE-2021-31882, CVE-2021-31883, CVE-2021-31884: Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE/TALON and Desigo products.)
MitigationDesigo PXC128-Ucisa_csaf_ot
CVE-2021-31881, CVE-2021-31882, CVE-2021-31883, CVE-2021-31884: Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE/TALON and Desigo products.)
MitigationDesigo PXC200-E.Dcisa_csaf_ot
CVE-2021-31881, CVE-2021-31882, CVE-2021-31883, CVE-2021-31884: Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE/TALON and Desigo products.)
MitigationDesigo PXC22-E.Dcisa_csaf_ot
CVE-2021-31881, CVE-2021-31882, CVE-2021-31883, CVE-2021-31884: Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE/TALON and Desigo products.)
MitigationDesigo PXC22.1-E.Dcisa_csaf_ot
CVE-2021-31881, CVE-2021-31882, CVE-2021-31883, CVE-2021-31884: Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE/TALON and Desigo products.)
MitigationDesigo PXC36.1-E.Dcisa_csaf_ot
CVE-2021-31881, CVE-2021-31882, CVE-2021-31883, CVE-2021-31884: Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE/TALON and Desigo products.)
MitigationDesigo PXC50-E.Dcisa_csaf_ot
CVE-2021-31881, CVE-2021-31882, CVE-2021-31883, CVE-2021-31884: Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE/TALON and Desigo products.)
MitigationDesigo PXC64-Ucisa_csaf_ot
CVE-2021-31881, CVE-2021-31882, CVE-2021-31883, CVE-2021-31884: Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE/TALON and Desigo products.)
MitigationDesigo PXM20-Ecisa_csaf_ot
CVE-2021-31881, CVE-2021-31882, CVE-2021-31883, CVE-2021-31884: Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE/TALON and Desigo products.)
MitigationTALON TC Compact (BACnet)cisa_csaf_ot
CVE-2021-31881, CVE-2021-31882, CVE-2021-31883, CVE-2021-31884: Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE/TALON and Desigo products.)
MitigationTALON TC Modular (BACnet)cisa_csaf_ot
CVE-2021-31881, CVE-2021-31882, CVE-2021-31883, CVE-2021-31884: Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE/TALON and Desigo products.)
MitigationCapital Embedded AR Classic 431-422cisa_csaf_ot
Disable DHCP client functionality, if feature not used, by deselecting the TcpIpIpV4General/TcpIpDhcpClientEnabled Pre-Compile configuration option
MitigationCapital Embedded AR Classic R20-11cisa_csaf_ot
Disable DHCP client functionality, if feature not used, by deselecting the TcpIpIpV4General/TcpIpDhcpClientEnabled Pre-Compile configuration option
No fix plannedNucleus NETsiemens_psirt
Currently no remediation is planned
No fix plannedAPOGEE MBC (PPC) (BACnet)siemens_psirt
Currently no fix is planned
No fix plannedAPOGEE MBC (PPC) (P2 Ethernet)siemens_psirt
Currently no fix is planned
No fix plannedAPOGEE MEC (PPC) (BACnet)siemens_psirt
Currently no fix is planned
No fix plannedAPOGEE MEC (PPC) (P2 Ethernet)siemens_psirt
Currently no fix is planned
No fix plannedCapital Embedded AR Classic 431-422siemens_psirt
Currently no fix is planned
No fix plannedNucleus NETcisa_csaf_ot
Currently no remediation is planned
No fix plannedAPOGEE MBC (PPC) (BACnet)cisa_csaf_ot
Currently no fix is planned
No fix plannedAPOGEE MBC (PPC) (P2 Ethernet)cisa_csaf_ot
Currently no fix is planned
No fix plannedAPOGEE MEC (PPC) (BACnet)cisa_csaf_ot
Currently no fix is planned
No fix plannedAPOGEE MEC (PPC) (P2 Ethernet)cisa_csaf_ot
Currently no fix is planned
No fix plannedCapital Embedded AR Classic 431-422cisa_csaf_ot
Currently no fix is planned

cvss

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

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6

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 · ENISA EU

v3.16.5mediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · productcert@siemens.com DEexploitability 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 · Siemens ProductCERT DE

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · Phoenix Contact PSIRT DE

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · WAGO PSIRT DE

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-119USCWE-119USCWE-119USCWE-119USCWE-119US

affected products (94)

Products and version ranges known to be affected.

APOGEE MBC (PPC) (BACnet)all versionscisa_csaf_otUS
APOGEE MBC (PPC) (P2 Ethernet)all versionscisa_csaf_otUS
APOGEE MEC (PPC) (BACnet)all versionscisa_csaf_otUS
APOGEE MEC (PPC) (P2 Ethernet)all versionscisa_csaf_otUS
APOGEE PXC Compact (BACnet)all versionscisa_csaf_otUS
APOGEE PXC Compact (P2 Ethernet)all versionscisa_csaf_otUS
APOGEE PXC Modular (BACnet)all versionscisa_csaf_otUS
APOGEE PXC Modular (P2 Ethernet)all versionscisa_csaf_otUS
Capital Embedded AR Classic 431-422all versionscisa_csaf_otUS
Capital Embedded AR Classic R20-11all versionscisa_csaf_otUS
Desigo PXC00-E.Dall versionscisa_csaf_otUS
Desigo PXC00-Uall versionscisa_csaf_otUS
Desigo PXC001-E.Dall versionscisa_csaf_otUS
Desigo PXC100-E.Dall versionscisa_csaf_otUS
Desigo PXC12-E.Dall versionscisa_csaf_otUS
Desigo PXC128-Uall versionscisa_csaf_otUS
Desigo PXC200-E.Dall versionscisa_csaf_otUS
Desigo PXC22-E.Dall versionscisa_csaf_otUS
Desigo PXC22.1-E.Dall versionscisa_csaf_otUS
Desigo PXC36.1-E.Dall versionscisa_csaf_otUS

showing 20 of 94

advisories (8)

Vendor and ecosystem advisories describing this.

SSA-044112SSA-044112: Multiple Vulnerabilities (NUCLEUS:13) in the TCP/IP Stack of Nucleus RTOS2021-11-09csaf · siemens_psirtDE
The TCP/IP stack and related services (FTP, TFTP) of the networking component (Nucleus NET) in Nucleus Real-Time Operating System (RTOS) contain several vulnerabilities, also known as "NUCLEUS:13" and as documented below. Siemens has released updates for several affected products and recommends to update to the latest versions. Siemens recommends countermeasures for products where updates are not available.
SSA-114589SSA-114589: Multiple Vulnerabilities in Nucleus RTOS based APOGEE, TALON and Desigo PXC/PXM Products2021-11-09csaf · siemens_psirtDE
Multiple vulnerabilities (also known as "NUCLEUS:13") have been identified in the Nucleus RTOS (real-time operating system) and reported in the Siemens Security Advisory SSA-044112: https://cert-portal.siemens.com/productcert/pdf/ssa-044112.pdf. The products listed below use affected versions of the Nucleus software and inherently contain these vulnerabilities. Siemens has released updates for several affected products and recommends to update to the latest versions. Siemens recommends specific countermeasures for products where updates are not, or not yet available.
SSA-620288SSA-620288: Multiple Vulnerabilities (NUCLEUS:13) in Capital Embedded AR Classic2021-12-14csaf · siemens_psirtDE
Multiple vulnerabilities (also known as "NUCLEUS:13") have be identified in the Nucleus RTOS (real-time operating system) and reported in the Siemens Security Advisory SSA-044112: https://cert-portal.siemens.com/productcert/html/ssa-044112.html. Capital Embedded AR Classic uses an affected version of the Nucleus software and inherently contains several of these vulnerabilities. Siemens has released a new version for Capital Embedded AR Classic R20-11 and recommends to update to the latest version. Siemens is preparing further fix versions and recommends specific countermeasures for products where fixes are not, or not yet available.
VDE-2021-050WAGO: Multiple devices affected by Vulnerabilities in NUCLEUS TCP Stack.2021-11-16csaf · wago_psirtDE
Multiple vulnerabilities were reported in the Nucleus Real-Time Operating System (RTOS). The Nucleus RTOS is an essential component in several WAGO PLCs and fieldbus coupler. WAGO uses older Versions of the Nucleus RTOS also in legacy products. For additional information please consult the official Siemens advisory: • Advisory SSA-044112
VDE-2021-059PHOENIX CONTACT: BLUEMARK X1 / LED / CLED printers utilizing the Siemens Nucleus RTOS TCP/IP Stack2022-01-11csaf · phoenix_contact_psirtDE
The TCP/IP stack and of the networking component (Nucleus NET) in Nucleus Real-Time Operating System (RTOS) contain several vulnerabilities. Nucleus NET is utilized by BLUEMARK X1 / LED / CLED. The abovementioned BLUEMARK printers are discontinued and only impacted by a subset of 8 of the 13 discovered vulnerabilities.
ICSA-21-313-03Siemens Nucleus RTOS TCP/IP Stack2021-11-09icsa · cisa_csaf_otUS
The TCP/IP stack and related services (FTP, TFTP) of the networking component (Nucleus NET) in Nucleus Real-Time Operating System (RTOS) contain several vulnerabilities, also known as "NUCLEUS:13" and as documented below. Siemens has released updates for several affected products and recommends to update to the latest versions. Siemens recommends countermeasures for products where updates are not available.
ICSA-21-315-07Siemens Nucleus RTOS-based APOGEE and TALON Products (Update C)2021-11-09icsa · cisa_csaf_otUS
Multiple vulnerabilities (also known as "NUCLEUS:13") have been identified in the Nucleus RTOS (real-time operating system) and reported in the Siemens Security Advisory SSA-044112: https://cert-portal.siemens.com/productcert/pdf/ssa-044112.pdf. The products listed below use affected versions of the Nucleus software and inherently contain these vulnerabilities. Siemens has released updates for several affected products and recommends to update to the latest versions. Siemens recommends specific countermeasures for products where updates are not, or not yet available.
ICSA-21-350-06Siemens Capital VSTAR2021-12-14icsa · cisa_csaf_otUS
Multiple vulnerabilities (also known as "NUCLEUS:13") have be identified in the Nucleus RTOS (real-time operating system) and reported in the Siemens Security Advisory SSA-044112: https://cert-portal.siemens.com/productcert/html/ssa-044112.html. Capital Embedded AR Classic uses an affected version of the Nucleus software and inherently contains several of these vulnerabilities. Siemens has released a new version for Capital Embedded AR Classic R20-11 and recommends to update to the latest version. Siemens is preparing further fix versions and recommends specific countermeasures for products where fixes are not, or not yet available.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cisa_csaf_ot siemens_psirt wago_psirt phoenix_contact_psirt NVD CVE.org MITRE

published 2021-11-09modified 2026-06-17

references (27)

External citations — patches, advisories, analysis.

scry

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