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CVE-2024-56539 Siemens CVE debrief

CVE-2024-56539 is a vulnerability in the Linux kernel's mwifiex wireless driver, specifically a memcpy() field-spanning write warning in the mwifiex_config_scan() function. The vulnerability was published on 2025-08-12 and last modified on 2026-02-25. Siemens has identified this CVE as applicable to certain industrial networking products running SINEC OS, including the RUGGEDCOM RST2428P and SCALANCE X-family switches. The CISA advisory ICSA-25-226-07, which tracks third-party components in SINEC OS, has undergone multiple revisions—most recently on 2026-02-25 to republish based on Siemens ProductCERT advisory SSA-355557. Notably, the source material marks the impact assessment for affected products as 'Misinformed,' suggesting potential uncertainty or correction in initial severity characterization. No CVSS score or severity rating is currently available from the source corpus. The vulnerability is not listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, and no known ransomware campaign use has been documented.

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 industrial networking equipment with wireless capabilities, particularly RUGGEDCOM RST2428P and SCALANCE X-family switches running SINEC OS. OT security teams managing critical infrastructure networks, industrial automation engineers responsible for patch management, and CISOs overseeing industrial IoT/IIoT security postures should monitor this advisory for corrected impact assessments and vendor guidance.

Technical summary

The vulnerability exists in the mwifiex (Marvell WiFi Ex) driver within the Linux kernel. The mwifiex_config_scan() function contains a memcpy() operation that triggers a field-spanning write warning, indicating potential memory safety issues when handling scan configuration data structures. This driver is used in wireless-capable industrial devices running SINEC OS. The field-spanning write pattern suggests the memcpy() may write beyond intended structure boundaries, which could lead to memory corruption under specific conditions. The 'Misinformed' impact classification in the source advisory indicates that initial severity assessments may have been incorrect or require re-evaluation.

Defensive priority

medium

Recommended defensive actions

  • Review Siemens ProductCERT advisory SSA-355557 for detailed product-specific guidance
  • Verify SINEC OS version and installed kernel packages on affected Siemens devices
  • Apply vendor-provided security updates when available per Siemens advisory
  • Monitor CISA ICSA-25-226-07 for subsequent revisions to impact assessment
  • Implement network segmentation for industrial wireless infrastructure until patches are deployed
  • Follow CISA ICS recommended practices for defense-in-depth strategies

Evidence notes

The vulnerability description originates from the Linux kernel commit message style, indicating a memcpy() field-spanning write issue in mwifiex_config_scan(). Siemens ProductCERT advisory SSA-355557 and CISA ICSA-25-226-07 are the authoritative sources. The 'Misinformed' impact classification appears in the CSAF threats section for product IDs CSAFPID-0006, CSAFPID-0002, and CSAFPID-0003. The advisory revision history shows substantial updates through February 2026, including removal of multiple rejected CVEs and clarification of affected product configurations.

Sources and references

Verified primary and authoritative sources

  • CVE-2024-56539 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2024-56539

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

  • CVE-2024-56539 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2024-56539

    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-25-226-07.json

    cisa_csaf

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/csaf/ssa-355557.json

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/html/ssa-355557.html

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-advisories/icsa-25-226-07

    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.