---
cve: "CVE-2025-40805"
severity: "CRITICAL"
cvss: 10.0
epss: "61%"
vendor: "Siemens"
kev: false
exploited: false
published: "2026-01-13 10:15:58"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-07T07:49:22+02:00"
---

# CVE-2025-40805

> 10.0 CRITICAL

## Beschreibung

Affected devices do not properly enforce user authentication on specific API endpoints. This could facilitate an unauthenticated remote attacker to circumvent authentication and impersonate a legitimate user. Successful exploitation requires that the attacker has learned the identity of a legitimate user.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Referenzen

- <https://cert-portal.siemens.com/productcert/html/ssa-014678.html>
- <https://cert-portal.siemens.com/productcert/html/ssa-001536.html>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2025-40805) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_