Is CVE-2026-72895 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-72895 being exploited in the wild.

How severe is CVE-2026-72895?

High severity, with a CVSS score of 7.7, published 13 October 2026.

Which products and versions are affected?

Siemens SIMATIC IPC BX-21A All versions < V31.01.13; Siemens SIMATIC IPC RW-543A All versions < V1.1.4; Siemens SIMATIC IPC227G All versions < V28.01.15; Siemens SIMATIC IPC277G All versions < V28.01.15; and 3 more.

How is CVE-2026-72895 attacked?

It is attacked with physical access or with local access, in a network appliance.

Am I affected by CVE-2026-72895?

Check whether you run Siemens SIMATIC IPC BX-21A, Siemens SIMATIC IPC RW-543A, Siemens SIMATIC IPC227G or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-72895: Siemens SIMATIC IPC UEFI Secure Boot bypass via test key

Q: Is there a fix for CVE-2026-72895?

Yes: fixed in SIMATIC IPC BX-21A V31.01.13 or later, SIMATIC IPC RW-543A V1.1.4 or later, SIMATIC IPC227G/277G/277G PRO/327G/377G V28.01.15 or later. Until then: As temporary mitigation, users can manually remove the test key from the UEFI Secure Boot key database (e.g., "DO NOT TRUST - AMI Test PK" for RW-543A or "insyde-ElkhartLake" for other models); however, this key will be restored if BIOS default settings are loaded, so upgrading to the fixed version is strongly recommended. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

Q: How is CVE-2026-72895 attacked?

It is attacked with physical access or with local access, in a network appliance.

Q: Am I affected by CVE-2026-72895?

Check whether you run Siemens SIMATIC IPC BX-21A, Siemens SIMATIC IPC RW-543A, Siemens SIMATIC IPC227G or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-72895 · Severity: high · CVSS 7.7 · Published 2026-10-13

Siemens SIMATIC Industrial PCs contain a hard-coded BIOS test key in the UEFI Secure Boot database that allows local attackers with physical or administrative access to bypass Secure Boot protections. An attacker could boot unauthorized operating systems or firmware, gaining complete control of the device and exposing sensitive industrial automation data and operations to compromise.

Technologies: Siemens SIMATIC IPC BX-21A, Siemens SIMATIC IPC RW-543A, Siemens SIMATIC IPC227G, Siemens SIMATIC IPC277G, Siemens SIMATIC IPC277G PRO, Siemens SIMATIC IPC327G. Vendors: Siemens.

Quick answers

Is CVE-2026-72895 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-72895 being exploited in the wild.
How severe is CVE-2026-72895?: High severity, with a CVSS score of 7.7, published 13 October 2026.
Which products and versions are affected?: Siemens SIMATIC IPC BX-21A All versions < V31.01.13; Siemens SIMATIC IPC RW-543A All versions < V1.1.4; Siemens SIMATIC IPC227G All versions < V28.01.15; Siemens SIMATIC IPC277G All versions < V28.01.15; and 3 more.
Is there a fix for CVE-2026-72895?: Yes: fixed in SIMATIC IPC BX-21A V31.01.13 or later, SIMATIC IPC RW-543A V1.1.4 or later, SIMATIC IPC227G/277G/277G PRO/327G/377G V28.01.15 or later. Until then: As temporary mitigation, users can manually remove the test key from the UEFI Secure Boot key database (e.g., "DO NOT TRUST - AMI Test PK" for RW-543A or "insyde-ElkhartLake" for other models); however, this key will be restored if BIOS default settings are loaded, so upgrading to the fixed version is strongly recommended. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-72895 attacked?: It is attacked with physical access or with local access, in a network appliance.
Am I affected by CVE-2026-72895?: Check whether you run Siemens SIMATIC IPC BX-21A, Siemens SIMATIC IPC RW-543A, Siemens SIMATIC IPC227G or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

Fixed in: SIMATIC IPC BX-21A V31.01.13 or later, SIMATIC IPC RW-543A V1.1.4 or later, SIMATIC IPC227G/277G/277G PRO/327G/377G V28.01.15 or later

As temporary mitigation, users can manually remove the test key from the UEFI Secure Boot key database (e.g., "DO NOT TRUST - AMI Test PK" for RW-543A or "insyde-ElkhartLake" for other models); however, this key will be restored if BIOS default settings are loaded, so upgrading to the fixed version is strongly recommended.

Technical details

A BIOS vendor test key is present in the UEFI Secure Boot key database due to CWE-1394 (Use of Default Cryptographic Key). Local attackers with physical access or administrative privileges can boot code signed with the test key, circumventing Secure Boot protections even when enabled. This results in full compromise of system confidentiality, integrity, and availability.

Affected products

Siemens SIMATIC IPC BX-21A All versions < V31.01.13
Siemens SIMATIC IPC RW-543A All versions < V1.1.4
Siemens SIMATIC IPC227G All versions < V28.01.15
Siemens SIMATIC IPC277G All versions < V28.01.15
Siemens SIMATIC IPC277G PRO All versions < V28.01.15
Siemens SIMATIC IPC327G All versions < V28.01.15
Siemens SIMATIC IPC377G All versions < V28.01.15

Timeline

2026-10-13: disclosed

References

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

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