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PatchSiren cyber security CVE debrief

CVE-2024-53241 Siemens CVE debrief

CVE-2024-53241 is a vulnerability in the x86/xen PV iret hypercall implementation. The issue stems from problems with the PV iret hypercall through the hypercall page, which was addressed by directly coding the sequence in xen-asm.S to avoid complications with speculation mitigations. The vulnerability was published on 2025-08-12 and last modified on 2026-02-25. Siemens has identified this CVE as affecting certain industrial networking products, specifically the RUGGEDCOM RST2428P and SCALANCE families, though the CISA advisory marks the impact assessment as 'Misinformed' for the listed product IDs. No CVSS score or severity rating is currently available in the source data. The vulnerability originates from the Xen hypervisor codebase and impacts products that incorporate affected third-party components.

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 RST2428P, SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family, or SCALANCE XCM-/XRM-/XCH-/XRH-300 family devices in industrial environments. Also relevant to security teams managing Xen-based virtualization infrastructure and OT/ICS security practitioners tracking third-party component vulnerabilities.

Technical summary

The vulnerability exists in the x86 Xen hypervisor's PV (paravirtualized) iret hypercall handling. The hypercall page mechanism for PV iret created issues with speculation mitigations, requiring a fix that directly codes the sequence in xen-asm.S assembly rather than using the hypercall page indirection. This is a supply-chain vulnerability where the underlying Xen component affects downstream products.

Defensive priority

medium

Recommended defensive actions

  • Review Siemens ProductCERT advisory SSA-355557 for detailed product impact assessment
  • Verify Xen hypervisor version in affected Siemens product deployments
  • Apply vendor-provided firmware updates when available
  • Monitor CISA ICS advisories for updated guidance
  • Implement network segmentation for industrial control systems per CISA recommended practices

Evidence notes

Source indicates 'Misinformed' impact classification for affected product IDs (CSAFPID-0006, CSAFPID-0002, CSAFPID-0003). Advisory underwent four revisions, with the most recent on 2026-02-25 republishing based on Siemens ProductCERT SSA-355557.

Sources and references

Verified primary and authoritative sources

  • CVE-2024-53241 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2024-53241

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

  • CVE-2024-53241 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2024-53241

    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.