View CSAF Summary 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. The following versions of Siemens SIMATIC IPCs are affected: SIMATIC IPC BX-21A vers:intdot/<31.01.13 (CVE-2026-72895) SIMATIC IPC RW-543A vers:intdot/<1.1.4 (CVE-2026-72895) SIMATIC IPC227G / IPC277G / IPC277G PRO / IPC327G / IPC377G vers:intdot/<28.01.15 (CVE-2026-72895) CVSS Vendor Equipment v3 7.7 Siemens SIMATIC IPC BX-21A 1 Vulnerability Use of Default Cryptographic Key Background Critical Infrastructure Sectors: Critical Manufacturing, Transportation Systems, Energy, Healthcare and Public Health, Financial Services, Government Services and Facilities Countries/Areas Deployed: Worldwide Company Headquarters Location: Germany Vulnerabilities CVE-2026-72895 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 confidentialit...