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PatchSiren cyber security CVE debrief

CVE-2024-53237 Siemens CVE debrief

A use-after-free vulnerability exists in the Bluetooth subsystem's device_for_each_child function, where a device may be accessed after it has been freed, potentially leading to a dangling pointer and system instability. This vulnerability was initially reported as affecting Siemens industrial networking products running SINEC OS, including the RUGGEDCOM RST2428P and SCALANCE X-300/XR-300/XC-400/XR-500WG/XR-500 families. However, subsequent analysis and advisory updates indicate this CVE was incorrectly attributed to these products. The CISA advisory ICSA-25-226-07 was republished on February 25, 2026, based on Siemens ProductCERT SSA-355557, which clarified the affected product scope. The vulnerability description references a Linux kernel Bluetooth subsystem issue, suggesting this may be a third-party component vulnerability that was initially misidentified as affecting Siemens products.

Vendor
Siemens
Product
RUGGEDCOM RST2428P (6GK6242-6PA00)
CVSS
HIGH 8.8
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, or SCALANCE XCM-/XRM-/XCH-/XRH-300 families should verify current advisory status. Security teams managing industrial control systems with Bluetooth capabilities should monitor for kernel-level patches. Asset owners relying on CISA ICS advisories should note the February 2026 advisory republication and product scope clarification.

Technical summary

The vulnerability involves a use-after-free condition in the Linux Bluetooth subsystem's device_for_each_child function. This kernel-level issue could allow access to freed memory, resulting in dangling pointers and potential system instability. The vulnerability was initially included in CISA's advisory for Siemens SINEC OS-based products but was subsequently identified as misattributed. The technical root cause appears to be improper synchronization between device removal and iteration operations in the Bluetooth driver stack, a pattern consistent with Linux kernel CVEs rather than Siemens proprietary code.

Defensive priority

medium

Recommended defensive actions

  • Verify current product security bulletin status through Siemens ProductCERT before applying any patches
  • Review SINEC OS release notes for any Bluetooth-related kernel updates
  • Apply defense-in-depth network segmentation for industrial control systems per CISA recommended practices
  • Monitor Siemens security advisories for definitive affected product confirmation
  • Ensure Bluetooth interfaces on industrial devices are disabled if not required for operations

Evidence notes

The source advisory ICSA-25-226-07 underwent multiple revisions. The February 25, 2026 republication specifically notes it was updated based on Siemens ProductCERT SSA-355557. The threat category in the source data is marked as 'Misinformed' for affected products, indicating potential incorrect attribution. The vulnerability description matches known Linux kernel Bluetooth use-after-free patterns rather than Siemens-specific implementations.

Sources and references

Verified primary and authoritative sources

  • CVE-2024-53237 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2024-53237

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

  • CVE-2024-53237 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2024-53237

    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.