---
title: "CVE-2026-72895: SIMATIC IPC - Authentication Bypass"
description: "SIMATIC IPC BX-21A < V31.01.13, IPC RW-543A < V1.1.4, IPC227G/IPC277G/IPC277G PRO/IPC327G/IPC377G < V28.01.15 contain a UEFI Secure Boot bypass caused by presence of BIOS vendor test key in the Secure Boot key database, letting local attackers with physical or administrative access bypass Secure Boot protections, exploit requires local physical or administrative access."
url: https://panop.io/threat-heartbeat/CVE-2026-72895/
---

# CVE-2026-72895 SIMATIC IPC - Authentication Bypass

SIMATIC IPC BX-21A < V31.01.13, IPC RW-543A < V1.1.4, IPC227G/IPC277G/IPC277G PRO/IPC327G/IPC377G < V28.01.15 contain a UEFI Secure Boot bypass caused by presence of BIOS vendor test key in the Secure Boot key database, letting local attackers with physical or administrative access bypass Secure Boot protections, exploit requires local physical or administrative access.

CVSS base score 7.7 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.14% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-72895)

## Details

Type

Authentication Bypass

Impact

Privilege Escalation, Denial Of Service, Information Disclosure, Data Tampering

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

Published

13 October 2026

Updated

15 October 2026

Weakness

[CWE-1394](https://cwe.mitre.org/data/definitions/1394.html)

## Vendor fix

Update to versions V31.01.13, V1.1.4, V28.01.15 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-72895](https://nvd.nist.gov/vuln/detail/CVE-2026-72895)
- [https://cert-portal.siemens.com/productcert/html/ssa-159454.html](https://cert-portal.siemens.com/productcert/html/ssa-159454.html)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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