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PatchSiren cyber security CVE debrief

CVE-2024-26625 Siemens CVE debrief

This CVE addresses a vulnerability in the Linux kernel's Logical Link Control (LLC) protocol implementation. The fix involves calling sock_orphan() at socket release time to properly handle socket lifecycle management. The vulnerability was resolved in the Linux kernel, and Siemens has assessed the impact on their industrial networking products as 'Misinformed' per their CSAF advisory, indicating the vulnerability does not affect their products as initially reported or the impact assessment has been corrected. The advisory was initially published on 2025-08-12 and most recently updated on 2026-02-25 to reflect corrections to the affected products list and removal of rejected CVEs.

Vendor
Siemens
Product
RUGGEDCOM RST2428P (6GK6242-6PA00)
CVSS
HIGH 7.8
CISA KEV
Not listed in stored evidence
Original CVE published
2025-08-12
Original CVE updated
2026-02-25
Advisory published
2025-08-12
Advisory updated
2026-02-25

Who should care

Organizations operating Siemens industrial networking equipment (RUGGEDCOM RST2428P, SCALANCE XC/XR/XCM/XRM/XCH/XRH families) in operational technology environments should monitor this advisory, though the current vendor assessment indicates low concern. Linux kernel maintainers and distributors should ensure the sock_orphan() fix is applied to affected kernel versions.

Technical summary

CVE-2024-26625 is a vulnerability in the Linux kernel's Logical Link Control (LLC) protocol implementation. The resolution involves calling sock_orphan() during socket release to ensure proper socket state management. This is a kernel-level networking stack fix. Siemens has evaluated this vulnerability against their industrial networking product lines including RUGGEDCOM RST2428P and SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family devices, determining the impact assessment to be 'Misinformed'—indicating either that the products are not actually vulnerable as initially thought, or that the severity/impact was overstated. The advisory has undergone significant revision, with the most recent update on 2026-02-25 correcting the affected products list and removing rejected CVEs from the advisory.

Defensive priority

low

Recommended defensive actions

  • Verify current firmware versions on affected Siemens industrial networking equipment per vendor guidance
  • Monitor Siemens ProductCERT advisory SSA-613116 for any future impact reassessment
  • Apply standard ICS security practices including network segmentation for critical infrastructure
  • Review CISA ICS recommended practices for defense-in-depth strategies

Evidence notes

The vulnerability description indicates a kernel-level fix in the LLC (Logical Link Control) protocol stack. Siemens' threat assessment categorizes impact as 'Misinformed' for affected product IDs CSAFPID-0001, CSAFPID-0004, and CSAFPID-0003. The advisory revision history shows multiple updates: initial publication (2025-08-12), correction of affected products list (2026-02-12), removal of rejected CVEs (2026-02-24), and final CISA republication based on Siemens ProductCERT SSA-613116 (2026-02-25).

Sources and references

Verified primary and authoritative sources

  • CVE-2024-26625 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2024-26625

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

  • CVE-2024-26625 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2024-26625

    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/2025/icsa-25-226-15.json

    cisa_csaf

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/csaf/ssa-613116.json

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/html/ssa-613116.html

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-advisories/icsa-25-226-15

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/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://www.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.