Connect your agent
AdvisoriesCriticalCheck your lockfilePluginHow it worksPricing Connect your agent

CVE record · CVE-2026-80465

Improper signature verification in Siemens Mendix SAML (Mendix 10 compatible) and others

CVSS 8.8 HighEPSS 0.0028 · 20th percentile

Published by the CVE Program (CNA: siemens) at 3 Sept 2026, 11:25 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 Mendix SAML (Mendix 10 compatible)
  • affected before V4.2.4 custom
Other versions: unknown
Siemens Mendix SAML (Mendix 11 compatible)
  • affected before V4.2.4 custom
Other versions: unknown
Siemens Mendix SAML (Mendix 9.24 compatible)
  • affected before V3.6.29 custom
Other versions: unknown
Identifiers
CVE-2026-80465
CNA
siemens
Weakness (CWE)
CWE-347
Tags
Published
3 Sept 2026
Updated
26 Oct 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
8.7 High 3.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N CNA (siemens)
8.8 High 4.0 CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N CNA (siemens)Used for this record
  • CISA KEV Not listed.
  • EPSS 0.0028, the 20th percentile, on 6 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 3 Sept 2026. 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.