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CVE-2023-52598 Siemens CVE debrief

This CVE addresses a vulnerability in the Linux kernel's s390/ptrace subsystem where the Floating-Point Control (FPC) register was not being handled correctly during ptrace operations. The vulnerability was resolved by implementing proper handling of the FPC register setting. The issue affects Siemens industrial networking products running SINEC OS, specifically the RUGGEDCOM RST2428P and SCALANCE X-family switches. CISA published this advisory on August 12, 2025, with subsequent updates through February 2026 to correct affected product listings and remove rejected CVEs. The vulnerability is classified as 'Misinformed' impact in the source advisory, indicating potential for incorrect information disclosure or system state manipulation through improper FPC register control.

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 infrastructure, particularly those with RUGGEDCOM RST2428P or SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family devices. Security teams managing OT/ICS environments should prioritize firmware updates. System administrators responsible for Linux on IBM Z (s390) architectures should verify kernel patch status.

Technical summary

CVE-2023-52598 is a vulnerability in the Linux kernel's ptrace subsystem for IBM Z (s390) architecture. The issue involves incorrect handling of the Floating-Point Control (FPC) register when set via ptrace operations. The FPC register manages floating-point exception masks, rounding modes, and status flags. Improper validation or handling of this register during process tracing could lead to information disclosure, denial of service, or potentially affect floating-point computation integrity in traced processes. The vulnerability was resolved in the Linux kernel with corrected FPC register setting logic. Siemens industrial networking products utilizing affected kernel versions in SINEC OS are impacted, including RUGGEDCOM RST2428P and multiple SCALANCE X-family switch models.

Defensive priority

medium

Recommended defensive actions

  • Review Siemens ProductCERT advisory SSA-613116 for detailed product-specific patch information
  • Verify SINEC OS version on affected SCALANCE and RUGGEDCOM devices
  • Apply vendor-provided firmware updates to address the underlying Linux kernel vulnerability
  • Monitor CISA ICS advisories for additional guidance on industrial control system protections
  • Implement network segmentation for industrial control systems per CISA recommended practices

Evidence notes

The vulnerability description indicates a kernel-level issue in s390 (IBM Z mainframe architecture) ptrace implementation. The FPC register controls floating-point rounding modes, exception masks, and flags. Improper handling could lead to information disclosure or unexpected floating-point behavior in traced processes. Siemens ProductCERT SSA-613116 is the authoritative source, republished by CISA as ICSA-25-226-15. The advisory underwent four revision cycles, with significant corrections in February 2026 regarding affected product scope.

Sources and references

Verified primary and authoritative sources

  • CVE-2023-52598 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2023-52598

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

  • CVE-2023-52598 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2023-52598

    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.