---
cve: "CVE-2025-40800"
severity: "CRITICAL"
cvss: 9.1
epss: "0.2%"
vendor: "Siemens"
kev: false
exploited: false
published: "2025-12-09 16:17:45"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-10-31T12:52:56+01:00"
---

# CVE-2025-40800

> 9.1 CRITICAL

## Beschreibung

A vulnerability has been identified in COMOS V10.6 (All versions < V10.6.1), COMOS V10.6 (All versions < V10.6.1), NX V2412 (All versions < V2412.8700), NX V2506 (All versions < V2506.6000), Simcenter 3D (All versions < V2506.6000), Simcenter Femap (All versions < V2506.0002), Solid Edge SE2025 (All versions < V225.0 Update 10), Solid Edge SE2026 (All versions < V226.0 Update 1). The IAM client in affected products is missing server certificate validation while establishing TLS connections to the authorization server. This could allow an attacker to perform a man-in-the-middle attack.

## CNA-Record (Kanon, cvelistV5)

- CNA: **siemens**
- State: PUBLISHED
- Stand: 2026-03-10 16:07:47
- CNA-CVSS: **7.4** (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N`)

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **none**
  - Automatable: **no**
  - Technical Impact: **total**

## CVSS-Vektor

```
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
```

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

## Schwachstellen-Klasse

- **CWE-295** — Improper Certificate Validation
  The product does not validate, or incorrectly validates, a certificate.

## Angriffsmuster (CAPEC)

- [CAPEC-459 — Creating a Rogue Certification Authority Certificate](https://capec.mitre.org/data/definitions/459.html) _(Severity: Very High)_
- [CAPEC-475 — Signature Spoofing by Improper Validation](https://capec.mitre.org/data/definitions/475.html) _(Severity: High)_

## Referenzen

- <https://cert-portal.siemens.com/productcert/html/ssa-868571.html>
- <https://cert-portal.siemens.com/productcert/html/ssa-212953.html>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2025-40800/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_