CVE-2025-40938

CriticalCVSS 9.8/10Last modified Oct 23, 2026

Description

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V4.0.1). The affected device stores sensitive information in the firmware. This could allow an attacker to access and misuse this information, potentially impacting the device’s confidentiality, integrity, and availability.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-798

Affected software

VendorProductVersions
SiemensSIMATIC CN 4100< V4.0.1

References

Timeline

Published
Dec 9, 2025
Last modified
Oct 23, 2026
NVD status
Analyzed

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CVE-2025-40938: Critical severity, CVSS 9.8 | Vulnix