PatchSiren cyber security CVE debrief

CVE-2024-53181 Siemens CVE debrief

A vulnerability in the Linux kernel's User-Mode Linux (UML) vector driver could allow a local attacker to cause a denial of service condition. The issue stems from improper handling of driver data during release operations, where drvdata is not available when expected. This affects Siemens industrial networking products running SINEC OS, specifically the RUGGEDCOM RST2428P and SCALANCE switch families. The vulnerability requires local access and low privileges to exploit, with no impact to confidentiality or integrity, but high availability impact. Siemens has released updates to address this issue.

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 RUGGEDCOM RST2428P switches or SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 and XCM-/XRM-/XCH-/XRH-300 family switches in industrial environments. Critical infrastructure operators, manufacturing facilities, and utility providers using these devices for network infrastructure should prioritize patching.

Technical summary

The vulnerability exists in the User-Mode Linux (UML) vector driver where driver data (drvdata) is not properly available during release operations. This can lead to a NULL pointer dereference or use-after-free condition, resulting in system crash or denial of service. The CVSS 3.1 base score of 5.5 reflects local attack vector, low attack complexity, low privileges required, and high availability impact with no confidentiality or integrity effects. Affected Siemens products incorporate this vulnerable kernel component in their SINEC OS firmware.

Defensive priority

medium

Recommended defensive actions

Apply vendor-provided updates to V3.2 or later for affected RUGGEDCOM and SCALANCE products per Siemens ProductCERT guidance
For SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family, consult Siemens support documentation for specific configuration guidance
Implement defense-in-depth strategies for industrial control systems per CISA recommended practices
Restrict local access to affected systems to authorized personnel only
Monitor for anomalous system behavior or unexpected reboots on affected devices

Evidence notes

CVE published 2025-08-12 per CISA CSAF advisory ICSA-25-226-07. Modified 2026-02-25. Advisory last updated to reflect Siemens ProductCERT SSA-355557 republication. CVSS 3.1 vector: AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H. CWE-20 (Improper Input Validation) identified.

Official resources

2025-08-12