Public preview. Built from real public data on November 9, 2026, 5:41 AM UTC.
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Industrial control advisorySeverity 7.5 high

Rockwell Automation ControlLogix, CompactLogix, CompactLogix 5480, GuardLogix, Compact GuardLogix

ICSA-26-244-05 · CISA · September 1, 2026

Summary

No summary from the source. Read the linked document.

What to do

Rockwell Automation recommends users update to firmware version 34.015 and later. Rockwell Automation recommends users update to firmware version 35.014 and later. Rockwell Automation recommends users update to firmware version 36.013 and later. Rockwell Automation recommends users update to firmware version 37.011 and later. Customers using the affected software who are not able to upgrade to one of the corrected versions should use Rockwell Automation's security best practices.

Vendor fix or mitigation, quoted from the advisory.

Each CVE in this advisory

CVESeverityKnown exploitedExploit likelihoodWeakness
CVE-2021-422607.5 highNo3.4%Loop with Unreachable Exit Condition (CWE-835)

Severity from the advisory (CVSS), known exploitation from CISA's catalog, exploit likelihood from EPSS (next 30 days).

Affected products

VendorProductAffected versionsFixed
Rockwell AutomationControlLogix 5580<34.015, <35.014, <36.013, <37.011—
Rockwell AutomationGuardLogix 5580<34.015, <35.014, <36.013, <37.011—
Rockwell AutomationCompactLogix 5380<34.015, <35.014, <36.013, <37.011—
Rockwell AutomationCompact GuardLogix 5380<34.015, <35.014, <36.013, <37.011—
Rockwell AutomationCompactLogix 5480<34.015, <35.014, <36.013, <37.011—

Why it's on these mode pages

  • Maritime: Vendor table: Rockwell Automation (industrial control makers used in every mode, all modes) (matched by rule)
  • Pipeline: Vendor table: Rockwell Automation (industrial control makers used in every mode, all modes) (matched by rule)
  • Freight rail: Vendor table: Rockwell Automation (industrial control makers used in every mode, all modes) (matched by rule)
  • Passenger rail and transit: Vendor table: Rockwell Automation (industrial control makers used in every mode, all modes) (matched by rule)
  • Highway and motor carrier: Vendor table: Rockwell Automation (industrial control makers used in every mode, all modes) (matched by rule)
  • Postal and parcel: Vendor table: Rockwell Automation (industrial control makers used in every mode, all modes) (matched by rule)

Change history

  1. September 1, 2026: Initial republication of Rockwell Automation advisory
  2. November 9, 2026: First collected by Watch

Securidigm Scout can match advisories like this one to the equipment on your own network, offline. securidigm.com