CVE-2025-40939

published 2025-12-09

CVE-2025-40939: A vulnerability has been identified in SIMATIC CN 4100 (All versions < V4.0.1). The affected device contains a USB port which allows unauthenticated…

medium 5.1 CVSS 4.0

AV P AC L AT N PR N UI N VC N VI N VA H SC N SI N SA N E X CR X IR X AR X MAV X MAC X MAT X MPR X MUI X MVC X MVI X MVA X MSC X MSI X MSA X S X AU X R X V X RE X U X

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.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
siemens	simatic_cn_4100	< V4.0.1	V4.0.1
siemens	simatic_cn_4100_firmware	< 4.0.1	4.0.1

CWE-284