CVE-2025-9042: Rockwell Automation Flex 5000 I/o

High severity, CVSS 8.7. EPSS: 0.3% chance of exploitation in the next 30 days.

A security issue exists due to improper handling of CIP Class 32’s request when a module is inhibited on the 5094-IY8 device. It causes the module to enter a fault state with the Module LED flashing red. Upon un-inhibiting, the module returns a connection fault (Code 16#0010), and the module cannot recover without a power cycle.

Affected products

• Rockwell Automation Flex 5000 I/o: up to and including 2.011

Published 2025-08-14. Last modified 2026-06-17.