CVE-2020-6084: Rockwellautomation Flex I/o 1794-Aent

High severity, CVSS 7.5. EPSS: 4.3% chance of exploitation in the next 30 days.

An exploitable denial of service vulnerability exists in the ENIP Request Path Logical Segment functionality of Allen-Bradley Flex IO 1794-AENT/B 4.003. A specially crafted network request can cause a loss of communications with the device resulting in denial-of-service. An attacker can send a malicious packet to trigger this vulnerability by sending an Electronic Key Segment with less bytes than required by the Key Format Table.

Affected products

• Rockwellautomation Flex I/o 1794-Aent: version 4.003 only

Published 2020-10-19. Last modified 2026-06-17.