Is CVE-2026-54799 in the CISA KEV catalog?

No. CVE-2026-54799 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-54799?

CVE-2026-54799 has a CVSS v3 base score of 6.7 (MEDIUM).

What is the EPSS score for CVE-2026-54799?

CVE-2026-54799 has an EPSS score of 0.13% (3th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2026-54799?

No published fix for CVE-2026-54799 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

CVE & CISA-KEV Catalog

CVE-2026-54799

MEDIUM

6.7

CVSS v3

NVD

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.

CWE-489

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

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CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredHigh

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.13%probability of exploitation in 30 days

3rdpercentile

Low risk: more likely to be exploited than 3% of all known CVEs.

References

Other references1

cert-portal.siemens.com

Related Vulnerabilities

Other CWE-489 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-32645	Critical	9.8	54%	-	-
CVE-2017-5259	High	8.8	39%	-	-
CVE-2022-20649	High	8.1	12%	-	-
CVE-2022-38715	High	8.8	3.7%	-	-
CVE-2018-5454	High	8.1	3.5%	-	-
CVE-2021-3972	Medium	6.7	3.0%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-07-09.