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CVE record · CVE-2025-40800

Improper certificate validation in Siemens COMOS V10.6 and others

CVSS 9.1 CriticalCriticalEPSS 0.0021 · 10th percentile

Critical, because:

  • CVSS score 9.1: 9.0 or more.

How we decide what’s critical

Published by the CVE Program (CNA: siemens) at 9 Dec 2025, 10:44 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
VendorProductVersions
Siemens COMOS V10.6
  • affected before V10.6.1 custom
Other versions: unknown
Siemens COMOS V10.6
  • affected before V10.6.1 custom
Other versions: unknown
Siemens NX V2412
  • affected before V2412.8700 custom
Other versions: unknown
Siemens NX V2506
  • affected before V2506.6000 custom
Other versions: unknown
Siemens Simcenter 3D
  • affected before V2506.6000 custom
Other versions: unknown
Siemens Simcenter Femap
  • affected before V2506.0002 custom
Other versions: unknown
Siemens Solid Edge SE2025
  • affected before V225.0 Update 10 custom
Other versions: unknown
Siemens Solid Edge SE2026
  • affected before V226.0 Update 1 custom
Other versions: unknown
Identifiers
CVE-2025-40800
CNA
siemens
Weakness (CWE)
CWE-295
Tags
Published
9 Dec 2025
Updated
10 Mar 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

ScoreRatingCVSSVectorSource
7.4 High 3.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N CNA (siemens)
9.1 Critical 4.0 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N CNA (siemens)Used for this record
  • CISA KEV Not listed.
  • EPSS 0.0021, the 10th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 9 Dec 2025. New records show when each source confirmed them.

Sources

References from the CNA

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.