TLS cert validation flaw in Siemens IAM client COMOS V10.6, NX V2412
CVE-2025-40800 Published on December 9, 2025
A vulnerability has been identified in COMOS V10.6 (All versions), COMOS V10.6 (All versions), 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.
Weakness Type
Improper Certificate Validation
The software does not validate, or incorrectly validates, a certificate. When a certificate is invalid or malicious, it might allow an attacker to spoof a trusted entity by interfering in the communication path between the host and client. The software might connect to a malicious host while believing it is a trusted host, or the software might be deceived into accepting spoofed data that appears to originate from a trusted host.
Products Associated with CVE-2025-40800
Want to know whenever a new CVE is published for Siemens products? stack.watch will email you.
Affected Versions
Siemens COMOS V10.6:- Before * is affected.
- Before * is affected.
- Before V2412.8700 is affected.
- Before V2506.6000 is affected.
- Before V2506.6000 is affected.
- Before V2506.0002 is affected.
- Before V225.0 Update 10 is affected.
- Before V226.0 Update 1 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.