---
cve: "CVE-2026-80465"
severity: "HIGH"
cvss: 8.8
epss: "0.2%"
vendor: "Siemens"
kev: false
exploited: false
published: "2026-09-03 13:06:10"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-20T19:54:48+02:00"
---

# CVE-2026-80465

> 8.8 HIGH

## Beschreibung

A vulnerability has been identified in Mendix SAML (Mendix 10 compatible) (All versions < V4.2.3), Mendix SAML (Mendix 11 compatible) (All versions < V4.2.3), Mendix SAML (Mendix 9.24 compatible) (All versions < V3.6.27). Affected versions of the module do not properly validate the SAML response signature. This could allow unauthenticated remote attackers to hijack an account (session) in specific SSO configurations.

## CVSS-Vektor

```
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
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Hoch | good |
| PR Privilegien | Keine | bad |

## Referenzen

- <https://cert-portal.siemens.com/productcert/html/ssa-887643.html>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-80465) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_