CVE-2026-54799 PUBLISHED

Assigner: siemens
Reserved: 16.06.2026 Published: 09.07.2026 Updated: 09.07.2026

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.

CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS Score: 6.7

Attack Vector	Local	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	High	Integrity Impact	High
User Interaction	None	Availability Impact	High

CVSS 3.1

CVSS Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS Score: 8.4

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Local	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	High	Integrity	None
Attack Requirements	None	Availability	High	Availability	None
Privileges Required	High
User Interaction	None

CVSS 4.0

Product Status

Vendor	Siemens
Product	CPCI85 Central Processing/Communication
Versions	Default: unknown affected from 0 to V26.20 (excl.)

Vendor	Siemens
Product	SICORE Base system
Versions	Default: unknown affected from 0 to V26.20.0 (excl.)

References

https://cert-portal.siemens.com/productcert/html/ssa-229470.html

Problem Types

CWE-489: Active Debug Code CWE