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CVE-2026-54799
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.
This record: live connection— last retrieved: 24 September 2026 at 05:14.
Taken directly from NVD, CISA or the vendor — sometimes in English, unchanged from the source.
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:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack vector
LOCAL
Privileges required
HIGH
User interaction
NONE
Confidentiality
High
Integrity
High
Availability
High
Probability of exploitation within 30 days
0.2%
Percentile
8e
Source: FIRST.org, updated on 23 September 2026.
Update to V26.20 or later version The firmware CPCI85 V26.20 is present within “CP-8031/CP-8050 Package” V26.20 https://support.industry.siemens.com/cs/ww/en/view/109804985/ and also within “SICAM EGS Package” V26.20 https://support.industry.siemens.com/cs/document/109972536/
Our own interpretation and context for the source data above.
IACS Radar assessment
Our own interpretation and context for this vulnerability — not an official source.
IACS Radar priority score
Based on CVSS 6.7, EPSS 0.2%, industrial relevance 55/100.
Combines CVSS, EPSS, KEV status, industrial relevance and exposure relevance — a complement to, not a replacement for, the individual scores below and above.
Conditions for exploitation
Operational impact & energy relevance
Possible loss of visibility of or control over the process upon successful exploitation.
Assessed as relevant to the energy sector based on: Vermeld in een officiële CISA ICS Advisory, wat directe relevantie voor industriële besturingssystemen bevestigt. Vendor "Siemens" is a known supplier of equipment for the energy sector.
Recommended defensive measures
Industrial relevance score
Classification is provisional; manual verification by an OT security analyst is recommended.
Classified by IACS Radar-analysepijplijn (geautomatiseerd) on 24 September 2026.
IEC 62443 mapping
Automatic IACS Radar assessment based on the reported CWE weakness classification; not an official certification statement.