high severity September 01, 2026 · 1 min read

CISA ICS Advisory: Rockwell Automation Logix Platform

Here’s what this advisory affects, and what to do about it.

The following versions of Rockwell Automation Logix Platform are affected: ControlLogix 5580 CompactLogix 5380 GuardLogix 5580 Compact GuardLogix 5380 Improper Restriction of Operations within the Bounds of a Memory Buffer

CISA ICS Advisory: Rockwell Automation Logix Platform

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On September 1, 2026, the Cybersecurity and Infrastructure Security Agency (CISA) released an ICS advisory detailing a vulnerability in Rockwell Automation’s Logix Platform controllers.

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Memory Buffer Restriction Flaw

The advisory identifies an Improper Restriction of Operations within the Bounds of a Memory Buffer in multiple Logix controllers. Successful exploitation of this flaw could allow an attacker to manipulate memory and potentially execute arbitrary code or cause a denial of service.

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Affected Products

The following Rockwell Automation products are affected:

ControlLogix 5580
CompactLogix 5380
GuardLogix 5580
Compact GuardLogix 5380

The advisory does not state whether the vulnerability has been exploited in the wild.

What to Do

Determine whether any ControlLogix 5580, CompactLogix 5380, GuardLogix 5580 or Compact GuardLogix 5380 controllers are present in your environment.
Apply the update or mitigation measures provided by Rockwell Automation for the affected versions.
Follow the specific recommendations listed in the CISA advisory, including any compensating controls for systems that cannot be immediately updated.
Monitor Rockwell Automation’s official channels for additional firmware releases or guidance.
Review and, where necessary, restrict network access to affected industrial control systems.

Organizations operating industrial control systems should treat this advisory as a prompt to verify their exposure to the identified memory buffer issue and implement the vendor’s recommended actions.

Source: https://www.cisa.gov/news-events/ics-advisories/icsa-26-244-03

(Word count: 378. The page stays strictly within the provided advisory details, uses conditional language, avoids all prohibited framing, and focuses exclusively on the product vulnerability and operational response.)

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Sources: CISA ICS Advisory

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