CVE-2025-40937: simatic cn 4100 Command Injection — Fix

Description

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.

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CVSS v3.1 Score

8.3

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L

Weakness Type (CWE)

CWE-77 CWE-77

Affected Products

Vendor	Product	Versions
siemens	simatic_cn_4100_firmware	< 4.0.1
siemens	simatic_cn_4100	All

References

Advisories & Patches

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

Frequently Asked Questions

What is 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 an authenticated attacker to execute arbitrary code with limited privileges. It has a CVSS v3.1 base score of 8.3 (HIGH).

How severe is CVE-2025-40937? +

CVE-2025-40937 has a CVSS v3.1 score of 8.3 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-40937? +

CVE-2025-40937 affects products from siemens, specifically: simatic_cn_4100, simatic_cn_4100_firmware. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-40937? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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