CVE-2026-9637 A denial-of-service security issue exists in the affected Logix platforms listed in the table above

Description

A denial-of-service security issue exists in the affected Logix platforms listed in the table above. The security issue stems from improper validation of input length during CIP message processing. This can result in a major nonrecoverable fault (MNRF), requiring a power cycle to recover

Affected products and versions