vulnerability Rockwell Automation CompactLogix 5380 ControlLogix 5580 / 1756-EN4TR Communications Module A vulnerability exists in Rockwell Automation's CompactLogix, ControlLogix, and GuardLogix communication modules (specifically the 1756-EN4TR module) due to improper certificate revocation handling. An attacker could exploit this to establish a connection using a revoked certificate, bypassing CIP Security protections.… CISA Advisories · Jul 30, 2026 High CVE-2026-9636certificate revocationcip securityindustrial control systems
