HomeSiemensCVE-2025-40939

CVE-2025-40939

MEDIUM
5.1CVSS
Published: 2025-12-09
Updated: 2025-12-16
AI Analysis

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.

CVSS Metrics

Vector
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
Attack Vector
physical
Complexity
low
Privileges
none
User Action
none
Confidentiality
undefined
Integrity
undefined
Availability
undefined
Weaknesses
CWE-284

Metadata

Primary Vendor
SIEMENS
Published
12/9/2025
Last Modified
12/16/2025
Source
NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

siemens : simatic_cn_4100_firmware

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CVE-CVE-2025-40939 | MEDIUM Severity | CVEDatabase.com | CVEDatabase.com