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PatchSiren cyber security CVE debrief

CVE-2025-8224 Siemens CVE debrief

CVE-2025-8224 is a low-severity, locally reachable denial-of-service issue tied to GNU Binutils BFD library code and mapped in the Siemens advisory to SIMATIC S7-1500 CPU products that include the additional GNU/Linux subsystem. The issue is publicly disclosed, but the supplied advisory data says local access is required and Siemens listed no fix at the time of the advisory, so defenders should focus on limiting shell access, trusted software use, and monitoring until vendor remediation is available.

Vendor
Siemens
Product
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)
CVSS
LOW 3.3
CISA KEV
Not listed in stored evidence
Original CVE published
2025-06-10
Original CVE updated
2026-05-14
Advisory published
2025-06-10
Advisory updated
2026-05-14

Who should care

OT and ICS defenders, Siemens SIMATIC S7-1500 operators, engineering teams that allow local shell access on affected CPUs, and anyone deploying applications or tooling from third-party sources on the additional GNU/Linux subsystem.

Technical summary

The supplied CVE description identifies a null pointer dereference in GNU Binutils 2.44, specifically in bfd_elf_get_str_section within bfd/elf.c in the BFD Library. The CVSS vector is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L, indicating local access and limited availability impact. Siemens/CISA advisory data maps the issue to five SIMATIC S7-1500 CPU product variants and recommends limiting access to the interactive shell and only building/running applications from trusted sources. The advisory remediations also state that no fix is currently available for the affected Siemens products.

Defensive priority

Medium-Low. The issue is locally exploitable and scored low, but it is publicly disclosed and affects industrial control equipment where even limited availability disruptions can matter operationally.

Recommended defensive actions

  • Restrict access to the interactive shell of the additional GNU/Linux subsystem to trusted personnel only.
  • Only build and run applications from trusted sources on affected devices.
  • Review whether the affected SIMATIC S7-1500 CPU models are in use and whether the GNU/Linux subsystem is enabled or reachable.
  • Track Siemens ProductCERT advisory SSA-082556 and apply vendor remediation when it becomes available; the supplied advisory currently lists no fix available.
  • Use defense-in-depth controls for ICS environments, including access restriction, monitoring, and segmentation around the affected systems.

Evidence notes

Timing and status are taken from the supplied CISA/Siemens source item: CVE-2025-8224 was published on 2025-06-10 and last updated on 2026-05-14. The CVE description states that the flaw is a null pointer dereference in GNU Binutils 2.44, affecting bfd_elf_get_str_section in bfd/elf.c, with local access required and public exploit disclosure; it also names patch db856d41004301b3a56438efd957ef5cabb91530. The Siemens advisory data mapped in the source item associates the issue with SIMATIC S7-1500 CPU models and states mitigation advice plus a 'none_available' remediation entry, so the debrief avoids claiming an available Siemens fix.

Sources and references

Verified primary and authoritative sources

  • CVE-2025-8224 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2025-8224

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

  • CVE-2025-8224 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2025-8224

    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-25-162-05.json

    cisa_csaf

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/csaf/ssa-082556.json

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/html/ssa-082556.html

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-advisories/icsa-25-162-05

    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.