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PatchSiren cyber security CVE debrief

CVE-2024-26910 Siemens CVE debrief

This CVE addresses a performance regression in the Linux kernel's netfilter ipset subsystem, specifically affecting the swap operation. The vulnerability was resolved in the Linux kernel and affects Siemens industrial networking products running SINEC OS, including the RUGGEDCOM RST2428P and SCALANCE X-family switches. The issue is classified as a performance regression rather than a traditional security vulnerability with direct exploitability. CISA and Siemens published coordinated advisories in August 2025, with subsequent updates through February 2026 to correct affected product listings and remove rejected CVEs. No CVSS score is available in the source data, and the vulnerability is not listed in CISA's Known Exploited Vulnerabilities (KEV) catalog.

Vendor
Siemens
Product
RUGGEDCOM RST2428P (6GK6242-6PA00)
CVSS
Unknown
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 RUGGEDCOM and SCALANCE industrial networking equipment with SINEC OS should monitor this advisory for completeness, though the reclassified impact suggests limited operational concern. Security teams maintaining Linux-based industrial systems should track kernel netfilter updates as part of routine maintenance.

Technical summary

The vulnerability exists in the Linux kernel's netfilter ipset subsystem, which provides framework for IP set management used in firewall rules. The specific issue involves a performance regression during swap operations, where inefficient handling could degrade system performance. The fix was committed to the Linux kernel mainline. Siemens products incorporating this kernel component were initially flagged but subsequently reclassified as 'Misinformed' impact, suggesting the vulnerability may not be practically exploitable or relevant in the vendor's specific implementation context.

Defensive priority

low

Recommended defensive actions

  • Review Siemens ProductCERT SSA-613116 for current product impact assessment
  • Verify SINEC OS version on affected Siemens industrial switches and routers
  • Apply standard kernel maintenance updates through vendor channels if applicable
  • Monitor CISA ICS advisories for any future reclassification

Evidence notes

The source advisory (ICSA-25-226-15) indicates this CVE was initially included in a Siemens ProductCERT advisory but later analysis determined the impact was 'Misinformed' per the threat category in the CSAF data. The February 2026 republication removed rejected CVEs and clarified product scope. The vulnerability description indicates a kernel-level fix for ipset swap performance, typical of Linux netfilter maintenance fixes.

Sources and references

Verified primary and authoritative sources

  • CVE-2024-26910 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2024-26910

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

  • CVE-2024-26910 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2024-26910

    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.