PatchSiren cyber security CVE debrief

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.

Official resources

2025-08-12