PatchSiren cyber security CVE debrief

CVE-2022-48666 Siemens CVE debrief

A use-after-free vulnerability in the SCSI core subsystem of the Linux kernel. The vulnerability was originally identified in 2022 but was not assigned a CVE identifier until August 2025. According to CISA's ICS advisory ICSA-25-226-07, this vulnerability affects Siemens industrial networking products running SINEC OS, specifically the RUGGEDCOM RST2428P and SCALANCE X-family switches. The advisory's threat assessment categorizes the impact as 'Misinformed' for the affected product configurations. The advisory has undergone multiple revisions, with the most recent update in February 2026 correcting affected product listings and clarifying configuration details for the SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family. No CVSS score is available in the source corpus.

Vendor: Siemens
Product: RUGGEDCOM RST2428P (6GK6242-6PA00)
CVSS: CRITICAL 9.8
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 switches or SCALANCE X-family industrial Ethernet switches (XC-300/XR-300/XC-400/XR-500WG/XR-500, XCM-/XRM-/XCH-/XRH-300 families) in critical infrastructure or industrial control environments should assess their exposure to this vulnerability.

Technical summary

This vulnerability exists in the SCSI (Small Computer Systems Interface) core subsystem of the Linux kernel. A use-after-free condition occurs when memory is accessed after it has been freed, potentially leading to memory corruption, denial of service, or code execution. The vulnerability affects Siemens industrial networking equipment running SINEC OS that incorporates the vulnerable kernel component. The CISA advisory indicates the threat impact is categorized as 'Misinformed' for the affected product configurations, suggesting potential for information disclosure or integrity issues rather than direct system compromise.

Defensive priority

medium

Recommended defensive actions

Review Siemens ProductCERT advisory SSA-355557 for detailed product impact and patch guidance
Verify SINEC OS version and affected product configurations against vendor documentation
Apply vendor-provided security updates when available
Implement network segmentation for industrial control systems per CISA recommended practices
Monitor CISA ICS advisories for additional updates to ICSA-25-226-07

Evidence notes

CVE published 2025-08-12 per CISA CSAF advisory ICSA-25-226-07. Advisory modified 2026-02-25 with republication based on Siemens ProductCERT SSA-355557. Threat impact categorized as 'Misinformed' per source threats array. Affected products include RUGGEDCOM RST2428P and SCALANCE X-family switches per CSAF product tree.

Sources and references

Verified primary and authoritative sources

CVE-2022-48666 CVE Program record
Publisher, destination, and source semantics verified

URL: https://www.cve.org/CVERecord?id=CVE-2022-48666

CVE Program - Official CVE Program record with source-provided CVE metadata.
CVE-2022-48666 NVD vulnerability detail
Publisher, destination, and source semantics verified

URL: https://nvd.nist.gov/vuln/detail/CVE-2022-48666

NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Source item URL
Unverified legacy reference

URL: https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2025/icsa-25-226-07.json

cisa_csaf
Source reference
Unverified legacy reference

URL: https://cert-portal.siemens.com/productcert/csaf/ssa-355557.json

Reference
Source reference
Unverified legacy reference

URL: https://cert-portal.siemens.com/productcert/html/ssa-355557.html

Reference
Source reference
Unverified legacy reference

URL: https://www.cisa.gov/news-events/ics-advisories/icsa-25-226-07

Reference
Source reference
Unverified legacy reference

URL: https://www.cisa.gov/news-events/ics-alerts/ics-alert-10-301-01

Reference
Source reference
Unverified legacy reference

URL: https://www.cisa.gov/resources-tools/resources/ics-recommended-practices

Reference
Source reference
Unverified legacy reference

URL: https://www.cisa.gov/topics/industrial-control-systems

Reference
Source reference
Unverified legacy reference

URL: https://www.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf

Reference

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.