CVE-2024-53184 Siemens CVE debrief

Who should care

Organizations operating Siemens industrial networking equipment including RUGGEDCOM RST2428P switches and SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 and XCM-/XRM-/XCH-/XRH-300 product families. This includes critical infrastructure operators, manufacturing facilities, energy sector organizations, and transportation systems that rely on these devices for network connectivity and industrial automation. System administrators and security teams responsible for maintaining SINEC OS-based industrial control systems should prioritize assessment and patching.

Technical summary

CVE-2024-53184 is a vulnerability in the Linux kernel's User-Mode Linux (UML) block device driver (ubd) where driver data (drvdata) is not properly available during the release operation. This can result in a use-after-free or null pointer dereference condition when the device is released, potentially causing system crashes or hangs. The vulnerability has a CVSS 3.1 score of 5.5 (Medium severity) with the vector AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H, indicating local attack vector, low attack complexity, low privileges required, no user interaction, and high availability impact with no confidentiality or integrity impact. Siemens has confirmed this vulnerability affects industrial networking products running SINEC OS, specifically the RUGGEDCOM RST2428P (6GK6242-6PA00), SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family, and SCALANCE XCM-/XRM-/XCH-/XRH-300 family. The vulnerability was initially disclosed on August 12, 2025, and the advisory was updated multiple times through February 25, 2026, to correct affected product listings and clarify configuration details. Remediation involves updating affected products to version 3.2 or later versions as specified in Siemens ProductCERT advisory SSA-355557.

Defensive priority

medium

Recommended defensive actions

• Apply vendor-provided updates to version 3.2 or later for affected Siemens RUGGEDCOM and SCALANCE products as specified in the Siemens ProductCERT advisory
• For SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family, consult the Additional Information section of the Siemens advisory for specific configuration guidance
• Implement defense-in-depth strategies for industrial control systems as recommended by CISA
• Monitor for anomalous local access attempts on affected systems
• Review and apply ICS-CERT recommended practices for securing industrial control systems
• Establish network segmentation to limit exposure of affected industrial networking equipment
• Ensure proper access controls are in place to prevent unauthorized local access to affected systems

Evidence notes

The vulnerability description indicates this is a Linux kernel UML ubd driver issue where drvdata is not properly available during release operations. The CVSS vector confirms local attack vector with low attack complexity and low privileges required. Siemens ProductCERT advisory SSA-355557 and CISA ICSA-25-226-07 provide authoritative vendor confirmation and remediation guidance. The advisory was republished by CISA on February 25, 2026, based on updated Siemens guidance.

Official resources