Information Exposure Vulnerability in SIMATIC CN 4100 by Siemens
CVE-2025-40941

5.3MEDIUM

Key Information:

Vendor

Siemens

Vendor
CVE Published:
9 December 2025

What is CVE-2025-40941?

A vulnerability has been found within the SIMATIC CN 4100, affecting all versions prior to V4.0.1. This issue results in the exposure of sensitive server information through its response messages. As a result, an attacker with access to the network could exploit this vulnerability to gather critical data, potentially facilitating targeted attacks on the system. It is essential for organizations using this product to prioritize updates to safeguard their network security.

Affected Version(s)

SIMATIC CN 4100 0

References

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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CVE-2025-40941 : Information Exposure Vulnerability in SIMATIC CN 4100 by Siemens