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PatchSiren cyber security CVE debrief

CVE-2024-5918 Siemens CVE debrief

An improper certificate validation vulnerability in Palo Alto Networks PAN-OS software enables an authorized user with a specially crafted client certificate to connect to an impacted GlobalProtect portal or GlobalProtect gateway as a different legitimate user. This attack is possible only if you 'Allow Authentication with User Credentials OR Client Certificate.'

Vendor
Siemens
Product
RUGGEDCOM APE1808
CVSS
HIGH 7.4
CISA KEV
Not listed in stored evidence
Original CVE published
2024-04-09
Original CVE updated
2025-05-13
Advisory published
2024-04-09
Advisory updated
2025-05-13

Who should care

Organizations using Siemens RUGGEDCOM APE1808 with Palo Alto Networks Virtual NGFW, particularly those with GlobalProtect deployments using client certificate authentication. Industrial control system operators should prioritize this fix given the critical infrastructure context.

Technical summary

CVE-2024-5918 is an improper certificate validation vulnerability in Palo Alto Networks PAN-OS software. When GlobalProtect is configured to 'Allow Authentication with User Credentials OR Client Certificate,' an authorized attacker can use a specially crafted client certificate to authenticate as a different legitimate user. This affects Siemens RUGGEDCOM APE1808 devices configured with Palo Alto Networks Virtual NGFW. The vulnerability has a CVSS 3.1 score of 7.4 (HIGH). A vendor fix is available by upgrading to Palo Alto Networks Virtual NGFW V11.1.2-h3.

Defensive priority

HIGH

Recommended defensive actions

  • Upgrade Palo Alto Networks Virtual NGFW to V11.1.2-h3. Contact customer support to receive patch and update information.
  • Review GlobalProtect authentication configuration and disable 'Allow Authentication with User Credentials OR Client Certificate' if not required.
  • Validate client certificate authentication implementations to ensure proper certificate chain validation and subject verification.
  • Monitor GlobalProtect portal and gateway logs for anomalous authentication patterns or certificate-based access attempts.
  • Apply defense-in-depth controls for industrial control systems per CISA recommended practices.

Evidence notes

CVE published 2024-04-09; modified 2025-05-13. CISA CSAF advisory ICSA-24-102-04 tracks this vulnerability for Siemens RUGGEDCOM APE1808 devices configured with Palo Alto Networks Virtual NGFW. The advisory was updated on 2024-12-10 to add CVE-2024-5918 as a newly published upstream vulnerability.

Sources and references

Verified primary and authoritative sources

  • CVE-2024-5918 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2024-5918

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

  • CVE-2024-5918 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2024-5918

    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-24-102-04.json

    cisa_csaf

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/csaf/ssa-455250.json

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/html/ssa-455250.html

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-advisories/icsa-24-102-04

    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.