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issue stems from the controller failing to properly reject certificates signed by an intermediate certificate that has been revoked via a Certificate Revocation List (CRL). This could allow a network-based attacker to establish a connection using a certificate that should be untrusted, potentially bypassing CIP Security protections.
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History
Tue, 14 Jul 2026 16:30:00 +0000
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ssvc
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Tue, 14 Jul 2026 15:45:00 +0000
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| Description | 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issue stems from the controller failing to properly reject certificates signed by an intermediate certificate that has been revoked via a Certificate Revocation List (CRL). This could allow a network-based attacker to establish a connection using a certificate that should be untrusted, potentially bypassing CIP Security protections. | |
| Title | Rockwell Automation CompactLogix® 5380 ControlLogix® 5580 / 1756-EN4 Communications Module – Certificate Revocation List Vulnerability | |
| Weaknesses | CWE-299 | |
| References |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: Rockwell
Published:
Updated: 2026-07-14T15:55:05.004Z
Reserved: 2026-05-26T18:10:55.329Z
Link: CVE-2026-9636
Updated: 2026-07-14T15:55:00.563Z
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OpenCVE Enrichment
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