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PatchSiren cyber security CVE debrief

CVE-2024-27417 Siemens CVE debrief

A vulnerability in the Linux kernel's IPv6 networking subsystem could allow a reference leak of 'struct net' in the inet6_rtm_getaddr() function. This flaw, resolved in the upstream kernel, affects Siemens industrial networking products running SINEC OS. The vulnerability stems from improper reference counting that could lead to resource exhaustion over time. Siemens has assessed the impact as 'Misinformed' for affected products, indicating the vulnerability's applicability or severity may have been initially overstated. The advisory was first published on August 12, 2025, with subsequent revisions through February 25, 2026, including corrections to affected product lists and removal of rejected CVEs.

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 SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family, SCALANCE XCM-/XRM-/XCH-/XRH-300 family, or RUGGEDCOM RST2428P industrial Ethernet switches in IPv6-enabled environments should monitor this advisory. OT security teams and network administrators responsible for critical infrastructure networking equipment should prioritize vendor guidance.

Technical summary

The inet6_rtm_getaddr() function in the Linux kernel's IPv6 implementation contained a potential reference leak of 'struct net'. This networking structure reference counting flaw could lead to gradual resource exhaustion. The vulnerability was resolved in upstream Linux kernel development. Siemens SINEC OS, used in SCALANCE and RUGGEDCOM industrial networking products, incorporates the affected kernel code. Siemens has reassessed the vulnerability impact as 'Misinformed' through advisory revisions, suggesting initial severity assessments may have been inaccurate. The advisory timeline shows multiple revisions: initial publication (2025-08-12), product list corrections (2026-02-12), removal of rejected CVEs (2026-02-24), and final republication (2026-02-25).

Defensive priority

medium

Recommended defensive actions

  • Review Siemens ProductCERT advisory SSA-613116 for current affected product status and patch availability
  • Verify SINEC OS version on deployed Siemens SCALANCE and RUGGEDCOM devices
  • Apply vendor-provided firmware updates when available per Siemens maintenance windows
  • Monitor for anomalous memory consumption on affected IPv6-enabled network infrastructure
  • Implement network segmentation to limit exposure of industrial control system devices
  • Follow CISA ICS recommended practices for defense-in-depth strategies

Evidence notes

CVE published 2025-08-12; modified 2026-02-25. Source advisory ICSA-25-226-15 from CISA CSAF. Siemens ProductCERT SSA-613116 is the canonical vendor advisory. Impact assessed as 'Misinformed' per source threats data.

Sources and references

Verified primary and authoritative sources

  • CVE-2024-27417 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2024-27417

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

  • CVE-2024-27417 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2024-27417

    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.