Security Advisory
CVE-2025-40939
4.6
MEDIUM
Vulnerability Description
A vulnerability has been identified in SIMATIC CN 4100 (All versions < V4.0.1). The affected device contains a USB port which allows unauthenticated connections. This could allow an attacker with physical access to the device to trigger reboot that could cause denial of service condition.
Published Date
December 9, 2025
Official Source
NIST NVD Advisory