CVE-2024-41940 Siemens CVE debrief

Who should care

Organizations operating Siemens SINEC NMS for industrial network management, particularly in critical infrastructure environments. Security teams responsible for OT/ICS asset protection, network administrators managing SINEC NMS deployments, and compliance officers tracking CVE remediation for industrial control systems.

Technical summary

CVE-2024-41940 is a command injection vulnerability in Siemens SINEC NMS network management software. The application fails to properly validate user input submitted to a privileged command queue, enabling an authenticated attacker with high privileges to inject and execute arbitrary operating system commands with elevated privileges. The vulnerability is exploitable over the network with low attack complexity and no user interaction required. Successful exploitation results in complete compromise of confidentiality, integrity, and availability of the affected system and potentially downstream systems given the scope change indicator in the CVSS vector.

Defensive priority

critical

Recommended defensive actions

• Update Siemens SINEC NMS to version 3.0 or later per vendor guidance
• Apply network segmentation to limit access to SINEC NMS management interfaces
• Review and restrict administrative accounts with high privileges to the affected system
• Monitor for anomalous command execution or privilege escalation attempts
• Follow CISA ICS recommended practices for defense-in-depth strategies

Evidence notes

Vulnerability description and remediation details sourced from CISA CSAF advisory ICSA-24-228-06 and Siemens security advisory SSA-784301. CVSS vector confirms network attack vector, low complexity, high privileges required, and high impact across confidentiality, integrity, and availability.

Official resources