CVE-2026-72895

highpriority · track · 31EPSS 0.001 · 3 %ileDEFRNLUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.14% (3rd) EPSS

CVSS 7.7 · high

Is it mine?

244 products

Check your exposure

Who says so?

4 sources

cisa_csaf_ot · ncsc_nl · siemens_psirt · certfr

EPSS · scored 2026-10-22

A vulnerability has been identified in SIMATIC IPC BX-21A (All versions < V31.01.13), SIMATIC IPC RW-543A (All versions < V1.1.4), SIMATIC IPC227G / IPC277G / IPC277G PRO / IPC327G / IPC377G (All versions < V28.01.15). A BIOS vendor test key is present in the UEFI Secure Boot key database. This could allow a local attacker with physical or administrative access to the device to boot an operating system or UEFI application signed with that test key, bypassing UEFI Secure Boot protections even when Secure Boot is enabled, potentially leading to a full loss of confidentiality, integrity, and availability of the device.

remediations

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

A vendor fix is available.

FixedSIMATIC IPC BX-21Asiemens_psirt
Update to V31.01.13 or later version
https://support.industry.siemens.com/cs/ww/en/view/109763408/
FixedSIMATIC IPC RW-543Asiemens_psirt
Update to V1.1.4 or later version
https://support.industry.siemens.com/cs/ww/en/view/109763408/
FixedSIMATIC IPC227G / IPC277G / IPC277G PRO / IPC327G / IPC377Gsiemens_psirt
Update to V28.01.15 or later version
https://support.industry.siemens.com/cs/ww/en/view/109763408/
FixedSIMATIC IPC BX-21Acisa_csaf_ot
Update to V31.01.13 or later version
https://support.industry.siemens.com/cs/ww/en/view/109763408/
FixedSIMATIC IPC RW-543Acisa_csaf_ot
Update to V1.1.4 or later version
https://support.industry.siemens.com/cs/ww/en/view/109763408/
FixedSIMATIC IPC227G / IPC277G / IPC277G PRO / IPC327G / IPC377Gcisa_csaf_ot
Update to V28.01.15 or later version
https://support.industry.siemens.com/cs/ww/en/view/109763408/
MitigationSIMATIC IPC BX-21Asiemens_psirt
 Note: After upgrading to the fixed BIOS version, users must load the BIOS default settings. If Secure Boot keys were already provisioned, they must be provisioned again afterwards.
MitigationSIMATIC IPC RW-543Asiemens_psirt
 Note: After upgrading to the fixed BIOS version, users must load the BIOS default settings. If Secure Boot keys were already provisioned, they must be provisioned again afterwards.
MitigationSIMATIC IPC227G / IPC277G / IPC277G PRO / IPC327G / IPC377Gsiemens_psirt
 Note: After upgrading to the fixed BIOS version, users must load the BIOS default settings. If Secure Boot keys were already provisioned, they must be provisioned again afterwards.
MitigationSIMATIC IPC BX-21Acisa_csaf_ot
 Note: After upgrading to the fixed BIOS version, users must load the BIOS default settings. If Secure Boot keys were already provisioned, they must be provisioned again afterwards.
MitigationSIMATIC IPC RW-543Acisa_csaf_ot
 Note: After upgrading to the fixed BIOS version, users must load the BIOS default settings. If Secure Boot keys were already provisioned, they must be provisioned again afterwards.
MitigationSIMATIC IPC227G / IPC277G / IPC277G PRO / IPC327G / IPC377Gcisa_csaf_ot
 Note: After upgrading to the fixed BIOS version, users must load the BIOS default settings. If Secure Boot keys were already provisioned, they must be provisioned again afterwards.

cvss

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

8.4

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5.7–8.4

v3.17.7highCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:Hprimary · productcert@siemens.com DEexploitability 1 · impact 6

v3.17.7highCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:Hsecondary · CISA US

v3.17.7highCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:Hsecondary · Siemens ProductCERT DE

v4.08.4highCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/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 · productcert@siemens.com DE

v4.05.7mediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/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.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-1394USCWE-1394USCWE-1394US

affected products (244)

Products and version ranges known to be affected.

Siemens SIMATIC IPC BX-21A≤ vers:intdot/<31.01.13cisa_csaf_otUS
Siemens SIMATIC IPC RW-543A≤ vers:intdot/<1.1.4cisa_csaf_otUS
Siemens SIMATIC IPC227G / IPC277G / IPC277G PRO / IPC327G / IPC377G≤ vers:intdot/<28.01.15cisa_csaf_otUS
Siemens .NET Client Library for SIMATIC S7 Webserver API≤ vers:unknown/*ncsc_nlNL
Siemens Desigo PXC00-E.D≤ vers:unknown/*ncsc_nlNL
Siemens Desigo PXC00-U≤ vers:unknown/*ncsc_nlNL
Siemens Desigo PXC001-E.D≤ vers:unknown/*ncsc_nlNL
Siemens Desigo PXC100-E.D≤ vers:unknown/*ncsc_nlNL
Siemens Desigo PXC12-E.D≤ vers:unknown/*ncsc_nlNL
Siemens Desigo PXC128-U≤ vers:unknown/*ncsc_nlNL
Siemens Desigo PXC200-E.D≤ vers:unknown/*ncsc_nlNL
Siemens Desigo PXC22-E.D≤ vers:unknown/*ncsc_nlNL
Siemens Desigo PXC22.1-E.D≤ vers:unknown/*ncsc_nlNL
Siemens Desigo PXC36.1-E.D≤ vers:unknown/*ncsc_nlNL
Siemens Desigo PXC50-E.D≤ vers:unknown/*ncsc_nlNL
Siemens Desigo PXC64-U≤ vers:unknown/*ncsc_nlNL
Siemens Desigo PXM20-E≤ vers:unknown/*ncsc_nlNL
Siemens Industrial Edge App Publisher≤ vers:unknown/*ncsc_nlNL
Siemens Industrial Edge Device Kit - arm64 V1.10≤ vers:unknown/*ncsc_nlNL
Siemens Industrial Edge Device Kit - arm64 V1.11≤ vers:unknown/*ncsc_nlNL

showing 20 of 244

advisories (4)

Vendor and ecosystem advisories describing this.

NCSC-2026-0415Kwetsbaarheden verholpen in Siemens-productenNL2026-10-13csaf · ncsc_nlNL
Siemens heeft kwetsbaarheden verholpen in diverse producten zoals Desigo, Industrial Plus, RUGGEDCOM, SIMATIC en SIPLUS.
SSA-159454SSA-159454: Hard-coded Key Vulnerability in SIMATIC IPCs2026-10-13csaf · siemens_psirtDE
The products listed below contain a vulnerability that could allow an attacker to boot an operating system or UEFI application signed with that test key, bypassing UEFI Secure Boot protections even when Secure Boot is enabled. Siemens has released new versions for the affected products and recommends to update to the latest versions.
ICSA-26-295-07Siemens SIMATIC IPCs2026-10-13icsa · cisa_csaf_otUS
The products listed below contain a vulnerability that could allow an attacker to boot an operating system or UEFI application signed with that test key, bypassing UEFI Secure Boot protections even when Secure Boot is enabled. Siemens has released new versions for the affected products and recommends to update to the latest versions.
CERTFR-2026-AVI-1298Multiples vulnérabilités dans les produits SiemensFrançais2026-10-13vendor · certfrFR

sources

Which sources assert this record, and when.

cisa_csaf_ot ncsc_nl siemens_psirt certfr NVD CVE.org MITRE

published 2026-10-13modified 2026-10-15

references (1) nvd

External citations — patches, advisories, analysis.

https://cert-portal.siemens.com/productcert/html/ssa-159454.html

scry

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