PatchSiren

PatchSiren cyber security CVE debrief

CVE-2025-9282 Rockwell Automation CVE debrief

CVE-2025-9282 affects Rockwell Automation ArmorStart LT devices and is described as a denial-of-service issue. In the CISA republished advisory, the device can reboot unexpectedly during Achilles Comprehensive limited storm tests, causing the Link State Monitor to go down for several seconds. Rockwell Automation reported no patch or upgrade at the time of the advisory and recommended applying ICS security best practices as mitigation.

Vendor
Rockwell Automation
Product
ArmorStart LT 290D
CVSS
HIGH 7.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-01-29
Original CVE updated
2026-01-29
Advisory published
2026-01-29
Advisory updated
2026-01-29

Who should care

Industrial control system operators, plant engineers, and asset owners using Rockwell Automation ArmorStart LT 290D, 291D, or 294D should care most, especially where brief device reboots or link-state interruptions could affect availability or process continuity.

Technical summary

The advisory describes an availability impact in ArmorStart LT: under the stated test condition, the device may reboot unexpectedly and the Link State Monitor may be unavailable for several seconds. The published CVSS vector is AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H, reflecting network-accessible, low-complexity, no-privileges, availability-only impact.

Defensive priority

High for OT environments that rely on continuous availability. Even a short reboot or link-state interruption can disrupt control visibility, monitoring, or dependent automation workflows. Because the source says no patch or upgrade was available, compensating controls and operational monitoring are the immediate priority.

Recommended defensive actions

  • Review Rockwell Automation advisory SD1768 and the CISA CSAF advisory for affected model coverage and mitigation notes.
  • Apply Rockwell Automation's recommended security best practices and ICS defensive measures where feasible.
  • Monitor affected ArmorStart LT devices for unexpected reboots, link-state drops, or repeated availability anomalies.
  • Validate operational impact and recovery procedures for short-lived device outages in connected control environments.
  • Track vendor and CISA updates for a future patch or additional mitigation guidance.

Evidence notes

This debrief is based on the CISA CSAF advisory republishing Rockwell Automation advisory SD1768, the supplied CVE record metadata, and the cited official references. The source text explicitly states the denial-of-service condition, the unexpected reboot behavior during Achilles Comprehensive limited storm tests, the temporary Link State Monitor outage, and the lack of a patch or upgrade at publication time. No exploit method or attacker workflow is described in the supplied corpus, so none is inferred here.

Sources and references

Verified primary and authoritative sources

  • CVE-2025-9282 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2025-9282

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

  • CVE-2025-9282 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2025-9282

    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-26-029-02.json

    cisa_csaf

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-advisories/icsa-26-029-02

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/uscert/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/sites/default/files/publications/Cybersecurity_Best_Practices_for_Industrial_Control_Systems.pdf

    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/news-events/ics-alerts/ics-alert-10-301-01

    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.