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PatchSiren cyber security CVE debrief

CVE-2024-41940 Siemens CVE debrief

A critical vulnerability in Siemens SINEC NMS allows authenticated attackers to execute OS commands with elevated privileges due to improper input validation on a privileged command queue. Published August 13, 2024, this vulnerability carries a CVSS 9.1 score and requires network access but no user interaction. The attack complexity is low, though the attacker must have high privileges. The vendor has released a fix in version 3.0 or later. Organizations should prioritize patching given the critical severity and the potential for complete system compromise.

Vendor
Siemens
Product
SINEC NMS
CVSS
CRITICAL 9.1
CISA KEV
Not listed in stored evidence
Original CVE published
2024-08-13
Original CVE updated
2024-08-13
Advisory published
2024-08-13
Advisory updated
2024-08-13

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.

Sources and references

Verified primary and authoritative sources

  • CVE-2024-41940 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2024-41940

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2024-41940 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2024-41940

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source item URL

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2024/icsa-24-228-06.json

    cisa_csaf

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/csaf/ssa-784301.json

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/html/ssa-784301.html

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-advisories/icsa-24-228-06

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/uscert/ics/alerts/ICS-ALERT-10-301-01

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/resources-tools/resources/ics-recommended-practices

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/topics/industrial-control-systems

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://us-cert.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf

    Reference

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.