AUGUST 4, 2026
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Case File

CVE-2025-40939

MEDIUM · CVSS 4.6 EPSS 0.19%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2025-12-09 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 4.6. It may lead to a denial-of-service condition.

CVE
CVE-2025-40939
Severity
MEDIUM
CVSS
4.6
EPSS
0.19%

Original NVD 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.

Related CVEs

Other vulnerabilities affecting the same vendor(s)