CVE-2026-54799 Security feature bypass in CPCI85 Central Processing/Communication
Attackers can bypass firmware signature validation to install malicious firmware, achieving persistent code execution on Siemens CPCI85 and SICORE systems.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-54799?
CVE-2026-54799 is a high-severity vulnerability in Siemens CPCI85 Central Processing/Communication, published on 9 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability has been identified in CPCI85 Central Processing/Communication (All versions < V26.20), SICORE Base system (All versions < V26.20.0). The affected application contains a vulnerability in its firmware update mechanism's signature validation process. This could allow an attacker to install malicious firmware, leading to persistent code execution and system compromise.
Weakness: CWE-489
Which versions are affected by CVE-2026-54799?
How do I fix CVE-2026-54799?
No fix has been published for CVE-2026-54799 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-54799 being exploited?
There is no known exploitation of CVE-2026-54799 in the wild and no public exploit code.
Sources
Also known as GHSA-j26p-j946-5hv2.