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CVE-2024-41044 Siemens CVE debrief

CVE-2024-41044 is a medium-severity vulnerability (CVSS 5.5) in the Point-to-Point Protocol (PPP) implementation, specifically involving malformed packets that are incorrectly claimed as Link Control Protocol (LCP) packets. The vulnerability was published on August 12, 2025, and last modified on February 25, 2026. According to CISA's ICS advisory ICSA-25-226-07, this vulnerability affects Siemens industrial networking products including the RUGGEDCOM RST2428P and SCALANCE X-family switches running SINEC OS. The threat assessment indicates potential impact categorized as 'Misinformed' for affected product configurations. The vulnerability stems from improper input validation (CWE-20) when processing PPP packets. Siemens has addressed this through their ProductCERT security advisory SSA-355557, which provides updated guidance and affected product clarifications. Organizations operating affected Siemens industrial control system devices should consult the vendor's security advisory for specific patch availability and configuration guidance.

Vendor
Siemens
Product
RUGGEDCOM RST2428P (6GK6242-6PA00)
CVSS
MEDIUM 5.5
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 deploying RUGGEDCOM RST2428P switches or SCALANCE X-family devices in critical infrastructure environments. OT security teams responsible for maintaining SINEC OS-based systems and network administrators managing PPP-based connections in industrial control system networks.

Technical summary

The vulnerability exists in PPP packet processing where malformed packets are incorrectly handled as valid LCP packets. This improper input validation condition (CWE-20) affects Siemens industrial networking equipment running SINEC OS, specifically the RUGGEDCOM RST2428P and SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family devices. The CSAF threat data indicates impact categorized as 'Misinformed' for affected product IDs CSAFPID-0006, CSAFPID-0002, and CSAFPID-0003. The advisory has undergone multiple revisions, with the most recent update on February 25, 2026, clarifying affected configurations and removing rejected CVEs from related advisories.

Defensive priority

medium

Recommended defensive actions

  • Review Siemens ProductCERT Security Advisory SSA-355557 for detailed affected product configurations and patch availability
  • Verify SINEC OS and PPP implementation versions on RUGGEDCOM RST2428P and SCALANCE X-family devices
  • Apply vendor-provided firmware updates when available per Siemens guidance
  • Implement network segmentation for industrial control systems per CISA recommended practices
  • Monitor CISA ICS advisories for additional updates to ICSA-25-226-07

Evidence notes

Vulnerability description and affected products sourced from CISA CSAF advisory ICSA-25-226-07. CVSS score and severity from CVE metadata. Threat impact assessment and product IDs from CSAF threat data. Siemens advisory SSA-355557 referenced as authoritative vendor source. CWE-20 (Improper Input Validation) cited from source references. Timeline derived from CSAF revision history showing initial publication 2025-08-12 and republication update 2026-02-25.

Sources and references

Verified primary and authoritative sources

  • CVE-2024-41044 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2024-41044

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

  • CVE-2024-41044 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2024-41044

    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.