Information disclosure in SIMATIC CN 4100 - CVE-2025-40940
Published: December 10, 2025
Vulnerability identifier: #VU119801
CSH Severity: Low
CVSS v4.0: 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:U/U:Clear
CVE-ID: CVE-2025-40940
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Siemens
Affected software:
SIMATIC CN 4100
SIMATIC CN 4100
Detailed vulnerability description
The vulnerability allows a remote user to gain access to potentially sensitive information.
The vulnerability exists due to the affected application exhibits inconsistent SNMP behavior. A remote administrator can gain unauthorized access to sensitive information on the system.
How to mitigate CVE-2025-40940
Install updates from vendor's website.