PatchSiren cyber security CVE debrief

CVE-2024-41000 Siemens CVE debrief

CVE-2024-41000 is a signed integer overflow vulnerability in the Linux kernel's block/ioctl subsystem, discovered through syzkaller fuzzing with the reintroduced signed integer overflow sanitizer. The vulnerability stems from insufficient overflow checking in block device ioctl operations. Siemens has assessed this CVE as 'Misinformed' for its affected industrial networking products, indicating the vulnerability does not actually impact these products as initially reported. The CVE was published on 2025-08-12 and last modified on 2026-02-25. This CVE is not listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, and no known ransomware campaign use has been documented.

Vendor: Siemens
Product: RUGGEDCOM RST2428P (6GK6242-6PA00)
CVSS: MEDIUM 5.9
CISA KEV: Not listed in stored evidence
Original CVE published: 2024-04-09
Original CVE updated: 2026-05-14
Advisory published: 2024-04-09
Advisory updated: 2026-05-14

Who should care

Organizations operating Siemens SCALANCE and RUGGEDCOM industrial networking equipment should verify their product configurations against vendor guidance, though this specific CVE is assessed as not affecting these products. Security teams in OT/ICS environments should maintain awareness of kernel-level vulnerabilities that could affect embedded Linux systems in industrial devices.

Technical summary

CVE-2024-41000 describes a signed integer overflow condition in the Linux kernel's block/ioctl implementation. The vulnerability was identified through automated fuzzing with syzkaller using the reintroduced signed integer overflow sanitizer. The underlying issue relates to overflow checking in block device ioctl operations. Siemens ProductCERT has assessed this CVE as 'Misinformed' for its industrial networking product lines, indicating that the reported vulnerability does not actually affect these products. This assessment was updated in the 2026-02-25 republication of CISA advisory ICSA-25-226-07.

Defensive priority

low

Recommended defensive actions

Verify that affected Siemens product models are running current firmware versions as specified in vendor security advisory SSA-355557
Apply defense-in-depth practices for industrial control systems per CISA guidance
Monitor CISA ICS advisories for updates to this assessment
Review and implement CISA recommended practices for ICS cybersecurity

Evidence notes

The source CISA CSAF advisory (ICSA-25-226-07) explicitly marks CVE-2024-41000 with threat category 'impact' and details 'Misinformed' for products including RUGGEDCOM RST2428P, SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family, and SCALANCE XCM-/XRM-/XCH-/XRH-300 family. The advisory was republished on 2026-02-25 based on Siemens ProductCERT SSA-355557. The CVE description indicates the issue was found via syzkaller with signed integer overflow sanitizer in block/ioctl.

Official resources

2025-08-12