CVE-2025-40940

CVSS 6.9 MEDIUMEPSS 0.3%CWE-200

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 6.9EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

09 Dec 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Affected products

Siemens · SIMATIC CN 4100

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References

https://cert-portal.siemens.com/productcert/html/ssa-416652.html