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PatchSiren cyber security CVE debrief

CVE-2024-53124 Siemens CVE debrief

CISA’s advisory for CVE-2024-53124 associates the issue with Siemens SIMATIC S7-1500 TM MFP - BIOS and rates it MEDIUM (CVSS 4.7). The advisory states that no fix is currently available and recommends a workaround focused on trusted software sources. Based on the CVSS vector, the issue requires local access with low privileges, is high complexity, needs no user interaction, and primarily affects availability.

Vendor
Siemens
Product
SIMATIC S7-1500 TM MFP - BIOS
CVSS
MEDIUM 4.7
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-14
Original CVE updated
2026-07-28
Advisory published
2026-07-14
Advisory updated
2026-07-28

Who should care

Operators, maintainers, and asset owners using Siemens SIMATIC S7-1500 TM MFP - BIOS in industrial control or OT environments should pay attention, especially if they install or run third-party applications on the affected platform.

Technical summary

The source advisory records CVE-2024-53124 under Siemens SIMATIC S7-1500 TM MFP - BIOS and gives it CVSS 3.1 vector AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H. That indicates a locally reachable issue with low privileges and high complexity, no user interaction, and an availability impact only. The advisory’s remediation section says no fix is available and offers a workaround to only build and run applications from trusted sources. The supplied CVE description text is a generic networking race-condition note, so the advisory-to-description linkage should be treated as source-corpus-specific.

Defensive priority

Medium priority: monitor affected Siemens OT deployments, but focus first on environments that allow local code execution or installation of untrusted applications because the advisory provides no patch and only a trust-based workaround.

Recommended defensive actions

  • Restrict the SIMATIC S7-1500 TM MFP - BIOS environment to trusted, approved applications only.
  • Review which users and processes have local access on affected systems and reduce privileges where possible.
  • Limit installation and execution of third-party software to vetted sources and signed, approved packages.
  • Monitor Siemens and CISA advisory updates for any future fix or expanded mitigation guidance.
  • Apply standard ICS defense-in-depth controls such as segmentation, least privilege, and application allowlisting where feasible.

Evidence notes

CISA’s CSAF source item (ICSA-25-072-03) lists Siemens as the vendor, SIMATIC S7-1500 TM MFP - BIOS as the affected product, and CVE-2024-53124 as one of the included CVEs. The remediations section states: 'Currently no fix is available' and provides the workaround 'Only build and run applications from trusted sources.' The CVSS vector in the source is AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H, supporting a local, low-privilege, availability-focused issue. The supplied CVE description text does not clearly match the Siemens product, so the product association is taken from the advisory metadata rather than the description alone.

Sources and references

Verified primary and authoritative sources

  • CVE-2024-53124 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2024-53124

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

  • CVE-2024-53124 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2024-53124

    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-25-072-03.json

    cisa_csaf

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/csaf/ssa-503939.json

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/html/ssa-503939.html

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-advisories/icsa-25-072-03

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/uscert/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://us-cert.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.