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CVE-2025-40940

nvd nist
Published: Dec 9, 2025Modified: Jun 17, 2026

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6.9
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/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
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CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/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:XShow less
Source: productcert@siemens.com (Secondary)

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.

Affected (1)

Siemens
1 product
Simatic Cn 4100 Firmware
Configuration A
1 vulnerable · 1 platform
Vulnerable SoftwareAffected Versions
Simatic Cn 4100 Firmware
Before 4.0.1
Running on/withPlatform Versions
Siemens
Simatic Cn 4100
All versions

Related CWEs

CWE-200
Exposure of Sensitive Information to an Unauthorized Actor
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

References (1)

Source: productcert@siemens.com
Vendor Advisory

Timeline

No history available yet.