THREAT OPS › Threat News › Rockwell Automation CompactLogix 5380 ControlLogix 5580 / 1756-EN4TR Communications Module
Rockwell Automation CompactLogix 5380 ControlLogix 5580 / 1756-EN4TR Communications Module
<p><a href="https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-211-05.json"><strong>View CSAF</strong></a></p> <h2>Summary</h2> <p><strong>Successful exploitation of this vulnerability could allow an attacker to cause a denial-of-service condition.</strong></p> <p>The following versions of Rockwell Automation CompactLogix 5380 ControlLogix 5580 / 1756-EN4TR Communication
MITRE ATT&CK techniques
Indicators of compromise
- CVE-2026-9636cve
- https://www.cve.org/CVERecord?id=CVE-2026-9636url
- https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:Nurl
- https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:Nurl
Original source: https://www.cisa.gov/news-events/ics-advisories/icsa-26-211-05
Same event, other sources
- Rockwell Automation CompactLogix 5380 ControlLogix 5580 / 1756-EN4TR Communications Modulecisa_advisories · 2026-07-30