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PatchSiren cyber security CVE debrief

CVE-2022-48174 Siemens CVE debrief

CVE-2022-48174 is a high-severity BusyBox shell vulnerability that Siemens republishes for several industrial networking products in its SINEC OS / SCALANCE / RUGGEDCOM portfolio. The source advisory describes a stack overflow in ash.c:6030 in BusyBox before 1.35, with the potential for arbitrary code execution in the affected environment. Siemens’ remediation is to update affected products to V3.3 or later.

Vendor
Siemens
Product
RUGGEDCOM RST2428P (6GK6242-6PA00)
CVSS
HIGH 7.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-01-28
Original CVE updated
2026-02-25
Advisory published
2026-01-28
Advisory updated
2026-02-25

Who should care

OT/ICS defenders, Siemens product owners, plant and infrastructure network administrators, and vulnerability management teams responsible for affected Siemens SINEC OS, SCALANCE, and RUGGEDCOM devices.

Technical summary

The advisory maps CVE-2022-48174 to a BusyBox ash stack overflow (ash.c:6030) present in BusyBox versions before 1.35. The CISA CSAF republication, based on Siemens ProductCERT advisory SSA-089022, lists multiple affected Siemens industrial networking products and states that firmware/update remediation is available. The provided CVSS vector is AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, indicating meaningful impact if a local user action can trigger the flaw in the affected deployment.

Defensive priority

High. The CVSS score is 7.8 and the source notes potential arbitrary code execution. In OT environments, even locally triggered flaws can be operationally significant because affected devices may be management-plane or edge components supporting critical connectivity.

Recommended defensive actions

  • Identify whether any Siemens devices in scope match the affected product families listed in the advisory.
  • Check installed firmware/software versions against Siemens advisory SSA-089022 and CISA advisory ICSA-26-043-06.
  • Upgrade affected products to V3.3 or later, per the vendor remediation guidance.
  • Prioritize devices that are exposed to administrative users or other local interactive access paths.
  • Restrict access to management interfaces and limit who can trigger shell or maintenance functions.
  • Apply OT change-control and maintenance-window procedures before remediation, and verify backups and rollback plans.
  • Monitor Siemens and CISA advisory updates for any product-scope clarifications or remediation changes.

Evidence notes

This debrief is based only on the supplied CISA CSAF source item and its embedded Siemens references. The source explicitly states the BusyBox ash stack overflow condition, the affected Siemens product families, and the remediation to update to V3.3 or later. The timeline uses the supplied advisory publication and modification dates from the source corpus; no independent disclosure date is inferred.

Sources and references

Verified primary and authoritative sources

  • CVE-2022-48174 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2022-48174

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

  • CVE-2022-48174 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2022-48174

    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/2026/icsa-26-043-06.json

    cisa_csaf

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/csaf/ssa-089022.json

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/html/ssa-089022.html

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-advisories/icsa-26-043-06

    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.