CVE-2025-40940

MEDIUM

SIMATIC CN 4100 < 4.0.1 - Exposure of Sensitive Information via SNMP Inconsistencies

Title source: llm

Description

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V4.0.1). The affected application exhibits inconsistent SNMP behavior, such as unexpected service availability and unreliable configuration handling across protocol versions. This could allow an attacker to access sensitive data, potentially leading to a breach of confidentiality.

References (1)

Core 1

Core References

Vendor Advisory

https://cert-portal.siemens.com/productcert/html/ssa-416652.html

Scores

CVSS v3 4.9

EPSS 0.0004

EPSS Percentile 12.3%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-200

Status published

Products (1)

siemens/simatic_cn_4100_firmware < 4.0.1

Published Dec 09, 2025

Tracked Since Feb 18, 2026