CVE-2026-9636

A security issue exists within CompactLogix® 5380, ControlLogix® 5580, and EN4 communication modules related to CIP Security certificate revocation handling. The security issue stems from the controller failing to properly reject certificates signed by an intermediate certificate that has been...

Sites using revoked intermediate certificates might be shown as secure – Opera Security Advisories

Sites using revoked intermediate certificates might be shown as secure – Opera Security Advisories OPCOM Team | August 29, 2009 Summary Opera does not check the revocation status for intermediate certificates not served by the server. If the intermediate is revoked, this might not impact the...