PatchSiren cyber security CVE debrief

CVE-2024-56597 Siemens CVE debrief

CVE-2024-56597 is a vulnerability in the JFS (Journaled File System) implementation affecting Siemens industrial networking products. The flaw involves a shift-out-of-bounds condition in the dbSplit function that occurs when dmt_budmin is less than zero, potentially causing errors in subsequent operations. The fix adds an early validation check in dbAllocCtl to return an error before the problematic condition can propagate. This vulnerability was published on August 12, 2025, and the advisory was most recently updated on February 25, 2026, to reflect republication based on Siemens ProductCERT SSA-355557. The affected products include RUGGEDCOM RST2428P and SCALANCE networking device families running SINEC OS. Notably, the CISA advisory marks the impact assessment as 'Misinformed,' indicating potential discrepancies in initial severity characterization. No CVSS score or severity rating is currently assigned in the source data. Organizations should consult the Siemens ProductCERT advisory for patch availability and apply updates according to vendor guidance.

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 SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family, SCALANCE XCM-/XRM-/XCH-/XRH-300 family, or RUGGEDCOM RST2428P industrial networking equipment; OT security teams managing SINEC OS deployments; infrastructure operators in critical manufacturing, energy, and transportation sectors relying on these network components.

Technical summary

The vulnerability exists in the JFS (Journaled File System) dbSplit function where a negative dmt_budmin value causes shift-out-of-bounds behavior. The remediation adds input validation in dbAllocCtl to detect and reject invalid dmt_budmin values before they reach dbSplit, preventing the error condition from propagating to later processing stages.

Defensive priority

medium

Recommended defensive actions

Review Siemens ProductCERT SSA-355557 for detailed product impact and patch status
Verify SINEC OS versions on affected SCALANCE and RUGGEDCOM devices
Apply vendor-provided firmware updates when available
Monitor CISA ICS advisories for additional guidance

Evidence notes

Source indicates 'Misinformed' impact assessment; no CVSS score assigned. Advisory updated 2026-02-25 based on Siemens SSA-355557.

Official resources

2025-08-12