PatchSiren cyber security CVE debrief

CVE-2024-27414 Siemens CVE debrief

CVE-2024-27414 is a vulnerability in the Linux kernel's rtnetlink subsystem related to improper error handling logic when writing back IFLA_BRIDGE_FLAGS. The vulnerability was resolved in the Linux kernel with a fix to the error logic for IFLA_BRIDGE_FLAGS writing back. Siemens has identified this vulnerability as affecting certain industrial networking products running SINEC OS, including the RUGGEDCOM RST2428P and SCALANCE X-family switches. The vulnerability is classified as 'Misinformed' impact in the CISA CSAF advisory. No CVSS score is currently assigned. Organizations should consult vendor guidance for patch availability and apply recommended mitigations for industrial control systems.

Vendor: Siemens
Product: RUGGEDCOM RST2428P (6GK6242-6PA00)
CVSS: Unknown
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 using RUGGEDCOM RST2428P or SCALANCE X-family switches in critical infrastructure environments. OT security teams responsible for patch management of SINEC OS devices. Network administrators managing industrial Ethernet networks with bridge configurations.

Technical summary

The vulnerability exists in the Linux kernel's rtnetlink (routing netlink) subsystem, specifically in the error handling logic when writing back IFLA_BRIDGE_FLAGS. The fix corrects this error logic. The vulnerability affects Siemens industrial networking products running SINEC OS, including RUGGEDCOM RST2428P switches and SCALANCE X-family devices (XC-300/XR-300/XC-400/XR-500WG/XR-500 and XCM-/XRM-/XCH-/XRH-300 families). These devices utilize the Linux kernel networking stack and are exposed to this vulnerability if running unpatched kernel versions. The rtnetlink interface is used for network configuration and bridge management in Linux-based systems.

Defensive priority

medium

Recommended defensive actions

Review Siemens ProductCERT advisory SSA-613116 for affected product versions and patch availability
Apply vendor-provided firmware updates for SINEC OS-based devices when available
Implement network segmentation for industrial control systems per CISA recommended practices
Monitor CISA ICS advisories for updates to ICSA-25-226-15

Evidence notes

The vulnerability description indicates a logic error in rtnetlink IFLA_BRIDGE_FLAGS handling that was resolved in the Linux kernel. Siemens ProductCERT advisory SSA-613116 provides affected product information. CISA advisory ICSA-25-226-15 was initially published 2025-08-12 and most recently updated 2026-02-25 to reflect republication based on the Siemens advisory. The advisory underwent multiple revisions including corrections to affected products list and removal of rejected CVEs.

Official resources

2025-08-12