Description

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V4.0.1). The affected device contains a USB port which allows unauthenticated connections. This could allow an attacker with physical access to the device to trigger reboot that could cause denial of service condition.

INFO

Published Date :

2025-12-09T10:44:37.963Z

Last Modified :

2025-12-09T15:26:06.742Z

Source :

siemens
AFFECTED PRODUCTS

The following products are affected by CVE-2025-40939 vulnerability.

Vendors Products
Siemens
  • Simatic Cn 4100
  • Simatic Cn 4100 Firmware
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-40939.

URL Resource
https://cert-portal.siemens.com/productcert/html/ssa-416652.html cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Attack Requirements
Privileges Required
User Interaction
VS Confidentiality
VS Integrity
VS Availability
SS Confidentiality
SS Integrity
SS Availability
Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact