PatchSiren cyber security CVE debrief

CVE-2024-56598 Siemens CVE debrief

CVE-2024-56598 is an array-index-out-of-bounds vulnerability in the JFS (Journaled File System) implementation, specifically within the dtReadFirst function. The vulnerability occurs when the stbl value can become out of bounds due to a malformed or corrupted filesystem. A fix was implemented to add bounds checking with appropriate error code returns. The vulnerability was published on 2025-08-12 and last modified on 2026-02-25. This CVE is included in CISA's ICS advisory ICSA-25-226-07 covering Siemens Third-Party Components in SINEC OS, which was republished based on Siemens ProductCERT advisory SSA-355557. The advisory underwent multiple revisions, including corrections to affected products list and removal of rejected CVEs in February 2026. Siemens RUGGEDCOM RST2428P and SCALANCE networking product families are mentioned in the advisory context. No CVSS score or severity rating is available in the source data. The vulnerability is not listed in CISA's Known Exploited Vulnerabilities (KEV) catalog.

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 RUGGEDCOM RST2428P, SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family, and SCALANCE XCM-/XRM-/XCH-/XRH-300 family industrial networking equipment; critical infrastructure operators using SINEC OS; security teams responsible for industrial control system (ICS) asset management and patch coordination.

Technical summary

The vulnerability exists in the JFS (Journaled File System) dtReadFirst function where the stbl (slot table) value can exceed valid array bounds when processing a corrupted or maliciously crafted filesystem. The fix implements proper bounds validation with appropriate error code returns to prevent out-of-bounds memory access. This is a third-party Linux kernel vulnerability affecting Siemens industrial networking products that incorporate JFS filesystem support.

Defensive priority

medium

Recommended defensive actions

Review Siemens ProductCERT advisory SSA-355557 for detailed product impact assessment and patch availability
Verify JFS filesystem implementations in affected Siemens industrial networking equipment
Apply vendor-provided firmware updates for RUGGEDCOM RST2428P and SCALANCE product families when available
Implement filesystem integrity monitoring for JFS volumes on affected systems
Follow CISA ICS recommended practices for defense-in-depth strategies in industrial control environments

Evidence notes

Source: CISA CSAF advisory ICSA-25-226-07, based on Siemens ProductCERT SSA-355557. Advisory revision history shows multiple updates through 2026-02-25. Threat assessment marked as 'Misinformed' in source. No CVSS vector or score provided.

Official resources

2025-08-12