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CVE-2024-50264 Siemens CVE debrief

A Use-After-Free vulnerability exists in the Linux kernel's vsock/virtio subsystem, specifically in the handling of the vsk->trans pointer during loopback communication. The vulnerability stems from improper initialization of this pointer, which can result in a dangling pointer condition. This flaw is exploitable locally with low attack complexity and low privileges required, potentially leading to a denial-of-service condition (availability impact rated HIGH). The vulnerability affects Siemens industrial networking products running SINEC OS, including RUGGEDCOM RST2428P and SCALANCE switch families. Siemens has released firmware updates to address this issue.

Vendor
Siemens
Product
RUGGEDCOM RST2428P (6GK6242-6PA00)
CVSS
MEDIUM 5.5
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 RST2428P, SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family, or SCALANCE XCM-/XRM-/XCH-/XRH-300 family switches in industrial control environments. Security teams responsible for OT/ICS infrastructure, network administrators managing industrial Ethernet switches, and compliance officers tracking CVE remediation for critical infrastructure should prioritize assessment and patching.

Technical summary

The vulnerability exists in the vsock/virtio transport layer of the Linux kernel. During loopback communication scenarios, the vsk->trans pointer may not be properly initialized, resulting in a dangling pointer. When this pointer is subsequently dereferenced, a Use-After-Free condition occurs. The CVSS 3.1 score of 5.5 (MEDIUM) reflects local attack requirements with high availability impact but no confidentiality or integrity impact. The vulnerability is present in Siemens industrial networking products that incorporate the affected Linux kernel components within SINEC OS.

Defensive priority

MEDIUM

Recommended defensive actions

  • Apply vendor-provided firmware updates to V3.2 or later for affected RUGGEDCOM and SCALANCE products per Siemens advisory SSA-355557
  • For SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family, consult Siemens support documentation for specific configuration guidance
  • Implement network segmentation to limit local access to affected industrial control systems
  • Monitor for anomalous behavior in vsock/virtio communications on affected systems
  • Follow CISA ICS recommended practices for defense-in-depth strategies
  • Review and apply Siemens security advisories for SINEC OS components regularly

Evidence notes

The vulnerability description is sourced from CISA CSAF advisory ICSA-25-226-07, which references Siemens ProductCERT advisory SSA-355557. The CVSS 3.1 vector (AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H) indicates local attack vector with high availability impact. The affected products are confirmed through Siemens' CSAF product tree with high confidence.

Sources and references

Verified primary and authoritative sources

  • CVE-2024-50264 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2024-50264

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

  • CVE-2024-50264 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2024-50264

    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.