CVE-2026-0647: Rockwell Automation Flex I/o Ethernet/ip Adapters

High severity, CVSS 8.8. EPSS: 0.4% chance of exploitation in the next 30 days.

An improper authentication security issue exists within the 1794-AENTR adapter's embedded web server. The vulnerability allows an unauthenticated attacker to change the device's web interface password by sending a crafted HTTP GET request to a specific endpoint, without any prior authentication being required. If exploited, this could lead to unauthorized access, account takeover, and loss of the device’s embedded web server’s availability.

Affected products

Published 2026-06-16. Last modified 2026-06-17.