Rockwell Automation CompactLogix 5380 ControlLogix 5580 / 1756-EN4TR Communications Module — ICSA-26-211-05

Summary

View CSAF Summary Successful exploitation of this vulnerability could allow an attacker to cause a denial-of-service condition. The following versions of Rockwell Automation CompactLogix 5380 ControlLogix 5580 / 1756-EN4TR Communications Module are affected: ControlLogix 5580 >=V36| CompactLogix 5380 >=V36| GuardLogix 5580 >=V36| Compact GuardLogix 5380 >=V36| 1756-EN4TR V6.001 (CVE-2026-9636) 1756-EN4TR V7.001…

Timeline

Published by source

2026-07-30

Risk context

• Reported severity or threat level: medium.
• Review exposure for the affected product or family: ICS Advisory.

Product

ICS Advisory

What to do

General, cautious steps (verify details in the official source):

• Review exposure and plan remediation based on risk and environment.
• Identify affected product versions in your inventory and verify whether you are impacted.
• Apply vendor patches/updates or recommended mitigations as soon as available.
• Read the official advisory for exact affected versions and remediation steps.

Official advisory

• Read the official source
• CVE Record
• NVD

Evidence and provenance

Canonical advisory ID

ICSA-26-211-05

Source

CISA ICS

Vendor

CISA

Published by source

2026-07-30

Last source activity

2026-07-30

Additional identifiers

CVE-2026-9636

Curated by

hlukh.ch

Related advisories and connections

These advisories are connected by shared CVE, product, vendor, source, or time signals.