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CVE-2022-48655 Siemens CVE debrief

CVE-2022-48655 is a HIGH severity vulnerability (CVSS 8.1) in the Linux kernel's ARM SCMI firmware subsystem. The issue involves missing bounds checking when accessing reset domain descriptors by index, which could lead to out-of-bounds memory access if an SCMI driver misbehaves. The vulnerability was resolved by adding internal consistency checks before accessing domain descriptors. Siemens has identified this vulnerability as affecting certain industrial networking products including the RUGGEDCOM RST2428P and SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family devices. A vendor fix is available requiring update to version 3.1 or later. The vulnerability was published on 2025-08-12 and last modified on 2026-02-25. This CVE is not listed in CISA's Known Exploited Vulnerabilities catalog.

Vendor
Siemens
Product
RUGGEDCOM RST2428P (6GK6242-6PA00)
CVSS
HIGH 8.1
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 equipment including SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family switches and RUGGEDCOM RST2428P devices. Critical infrastructure operators in manufacturing, energy, and transportation sectors utilizing these devices for industrial network infrastructure. Security teams responsible for OT/ICS environment patch management and vulnerability remediation.

Technical summary

The vulnerability exists in the Linux kernel's ARM System Control and Management Interface (SCMI) firmware subsystem. The SCMI reset operations interface allows drivers to access reset domain descriptors by index. Without proper bounds validation, a misbehaving SCMI driver could request an invalid index, resulting in out-of-bounds memory access. The fix implements internal consistency checks to validate index values before accessing domain descriptor arrays. This represents a classic missing bounds check vulnerability (CWE-125) in kernel firmware interfaces.

Defensive priority

HIGH

Recommended defensive actions

  • Apply vendor-provided firmware updates to version 3.1 or later for affected Siemens SCALANCE and RUGGEDCOM devices
  • Review and implement CISA ICS recommended practices for defense-in-depth strategies
  • Monitor network traffic to and from affected industrial control systems for anomalous behavior
  • Ensure proper network segmentation between IT and OT environments
  • Validate that SCMI driver implementations include proper bounds checking

Evidence notes

Vulnerability description sourced from CISA CSAF advisory ICSA-25-226-15. Affected product identification and remediation guidance derived from Siemens ProductCERT advisory SSA-613116 as republished by CISA. CVSS vector confirms network attack vector with high attack complexity, no privileges required, and high impacts to confidentiality, integrity, and availability.

Sources and references

Verified primary and authoritative sources

  • CVE-2022-48655 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2022-48655

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2022-48655 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2022-48655

    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-25-226-15.json

    cisa_csaf

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/csaf/ssa-613116.json

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/html/ssa-613116.html

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-advisories/icsa-25-226-15

    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.