CVE-2025-40939EPSS p10.7%

CVE-2025-40939CVE-2025-40939

siemens / simatic_cn_4100_firmware

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.

Scoring

CVSS 4.6 ()
VectorCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS0.21% probability of exploitation · percentile 10.7% · 2026-10-10T12:00:23Z
Last modified2026-10-07
Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.