CVE-2026-9140: Rockwell Automation 1718-aentr/1719-Aentr

High severity, CVSS 8.7. EPSS: 0.4% chance of exploitation in the next 30 days.

A denial-of-service security issue exists in the 1719-AENTR. The security issue stems from improper handling of a UDP unicast network storm, which causes the device to become overloaded and lose communication. A power cycle is required to recover.

Affected products

• Rockwell Automation 1718-aentr/1719-Aentr: version 3.011 only

Published 2026-07-14. Last modified 2026-07-14.