CVE-2025-40941

Description

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V4.0.1). The affected devices exposes server information in its responses. This could allow an attacker with network access to gain useful information, increasing the likelihood of targeted attacks.

CVSS v3.1 Score

4.3

MEDIUM

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

Weakness Type (CWE)

CWE-200 CWE-200

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-2025-40941? +

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V4.0.1). The affected devices exposes server information in its responses. This could allow an attacker with network access to gain useful information, increasing the likelihood of targeted attacks. It has a CVSS v3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2025-40941? +

CVE-2025-40941 has a CVSS v3.1 score of 4.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-40941? +

CVE-2025-40941 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-2025-40941? +

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.

Related Vulnerabilities

CVE-2025-15625

Unauthenticated user is able to execute arbitrary SQL commands in Sparx Pro Cloud Server database in certain cases.

CVE-2026-22051

StorageGRID (formerly StorageGRID Webscale) versions prior to 11.9.0.13 and 12.0.0.6 are susceptible to a Information Disclosure vulnerability. Successful exploit could …

CVE-2026-40166

authentik is an open-source identity provider. In versions prior to 2025.12.5 and 2026.2.0-rc1 through 2026.2.2, authenticated non-admin users with at …

CVE-2025-22138

@codidact/qpixel is a Q&A-based community knowledge-sharing software. In affected versions when a category is set to private or limited-visibility within …

CVE-2025-0659

A path traversal vulnerability exists in the Rockwell Automation DataEdge Platform DataMosaix Private Cloud. By specifying the character sequence in …

CVE-2025-24884

kube-audit-rest is a simple logger of mutation/creation requests to the k8s api. If the "full-elastic-stack" example vector configuration was used …