CVE-2026-72895 Security feature bypass in SIMATIC IPC BX-21A
A BIOS vendor test key in UEFI Secure Boot allows local attackers to bypass security protections and boot unauthorized operating systems or applications.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-72895?
CVE-2026-72895 is a high-severity vulnerability in Siemens SIMATIC IPC BX-21A, published on 13 Oct 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-1394
Which versions are affected by CVE-2026-72895?
How do I fix CVE-2026-72895?
No fix has been published for CVE-2026-72895 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-72895 being exploited?
There is no known exploitation of CVE-2026-72895 in the wild and no public exploit code.
Sources
Also known as GHSA-f9v9-v28p-r5mp.