What is CVE-2025-40937?

CVE-2025-40937 is a high-severity vulnerability in Siemens Simatic Cn 4100, classified under Command Injection. CVSS score: 8.3/10. Published 2025-12-09.

How severe is CVE-2025-40937?

High severity. CVSS v3 base score is 8.3 out of 10.

RCE in Siemens Simatic Cn 4100

CVE-2025-40937

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 a…

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.001 (24.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L.

Affected products

Siemens Simatic Cn 4100 — versions 0

Weakness classification (CWE)

CWE-77 — Command Injection

References

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

Frequently asked questions

What is CVE-2025-40937?: CVE-2025-40937 is a high-severity vulnerability in Siemens Simatic Cn 4100, classified under Command Injection. CVSS score: 8.3/10. Published 2025-12-09.
How severe is CVE-2025-40937?: High severity. CVSS v3 base score is 8.3 out of 10.