SIMATIC CN 4100 < V4.0.1 Improper REST API Input Allows Authenticated Code Exec
CVE-2025-40937 Published on December 9, 2025
A vulnerability has been identified in SIMATIC CN 4100 (All versions < V4.0.1). The affected application do not properly validate input parameters in its REST API, resulting in improper handling of unexpected arguments. This could allow an authenticated attacker to execute arbitrary code with limited privileges.
Weakness Type
What is a Command Injection Vulnerability?
The software constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.
CVE-2025-40937 has been classified to as a Command Injection vulnerability or weakness.
Products Associated with CVE-2025-40937
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Affected Versions
Siemens SIMATIC CN 4100:- Before V4.0.1 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.