Rockwell Automation Logix Platform

September 1, 2026·Source: CISA

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TL;DR

View CSAF Summary The following versions of Rockwell Automation Logix Platform are affected: ControlLogix 5580 <=V33, V34.011-V34.014, V35.011-V35.013, V36.011-V36.012 (CVE-2026-9637, CVE-2026-9637, CVE-2026-9637, CVE-2026-9637) CompactLogix 5380 <=V33, V34.011-V34.014, V35.011-V35.013, V36.011-V36.012 (CVE-2026-9637, CVE-2026-9637, CVE-2026-9637, CVE-2026-9637) GuardLogix 5580 <=V33, V34.011-V34.014, V35.011-V35.013, V36.011-V36.012 (CVE-2026-9637, CVE-2026-9637, CVE-2026-9637, CVE-2026-9637) Compact GuardLogix 5380 <=V33, V34.011-V34.014, V35.011-V35.013, V36.011-V36.012 (CVE-2026-9637, CVE-2026-9637, CVE-2026-9637, CVE-2026-9637) CVSS Vendor Equipment Vulnerabilities

v3 7.5 Rockwell Automation Rockwell Automation Logix Platform Improper Restriction of Operations within the Bounds of a Memory Buffer

Background Critical Infrastructure Sectors: Critical Manufacturing Countries/Areas Deployed: Worldwide Company Headquarters Location: United States Vulnerabilities Expand All + CVE-2026-9637 A denial-of-service vulnerability exists in the affected Logix platforms due to improper validation of input length during CIP message processing. This can result in a major nonrecoverable fault (MNRF), requiring a power cycle to recover. View CVE Details Affected Products Rockwell Automation Logix Platform Vendor: Rockwell Automation Product Version: Rockwell Automation ControlLogix 5580 <=V33, Rockwell Automation ControlLogix 5580 V34.011-V34.014, Rockwell Automation ControlLogix 5580 V35.011-V35.013, Rockwell Automation ControlLogix 5580 V36.011-V36.012, Rockwell Automation CompactLogix 5380 <=V33, Rockwell Automation CompactLogix 5380 V34.011-V34.014, Rockwell Automation CompactLogix 5380 V35.011-V35.013, Rockwell Automation CompactLogix 5380 V36.011-V36.012, Rockwell Automation GuardLogix 5580 <=V33, Rockwell Automation GuardLogix 5580 V34.011-V34.014, Rockwell Automation GuardLogix 5580 V35.011-V35.013, Rockwell Automation GuardLogix 5580 V36.011-V36.012, Rockwell Aut

What Happened

Rockwell Automation Logix Platform, reported by CISA.

v3 7.5 Rockwell Automation Rockwell Automation Logix Platform Improper Restriction of Operations within the Bounds of a Memory Buffer

For the full technical details, see the original report.

Why It Matters for Businesses

This development could affect organizations that rely on the impacted technologies or services. Unpatched systems, misconfigured infrastructure, or lack of monitoring can leave businesses exposed to exploitation, data breaches, and regulatory penalties.

How to Check Your Exposure

Run a free scan on NEL Professional's Cyber Risk Scanner to check whether your domain is affected. The scan covers SSL/TLS, security headers, DNS configuration, email authentication, and more across 16 modules.

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Mitigation Steps

Patch immediately, Apply vendor patches or updates as soon as they are available.
Review configurations, Check firewall rules, access controls, and security headers.
Monitor logs, Watch for indicators of compromise (IOCs) related to this threat.
Update security policies, Ensure incident response plans cover this type of threat.
Run a security scan, Use automated tools to verify your exposure.

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