SNMP Disclosure in SIMATIC CN4100 <V4.0.1
CVE-2025-40940 Published on December 9, 2025
A vulnerability has been identified in SIMATIC CN 4100 (All versions < V4.0.1). The affected application exhibits inconsistent SNMP behavior, such as unexpected service availability and unreliable configuration handling across protocol versions. This could allow an attacker to access sensitive data, potentially leading to a breach of confidentiality.
Weakness Type
What is an Information Disclosure Vulnerability?
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.
CVE-2025-40940 has been classified to as an Information Disclosure vulnerability or weakness.
Products Associated with CVE-2025-40940
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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.