Security & Threat Intelligence · 30.07.2026, 17:34 UTC
Rockwell Automation CompactLogix 5380 ControlLogix 5580 / 1756-EN4TR Communications Module
| Schweregrad | info |
|---|---|
| CVE | ↗ |
| Kategorie | Security & Threat Intelligence |
| Quelle | CISA Advisories ↗ |
| Veröffentlicht | 30.07.2026 UTC |
Sicherheitsmeldung mit Schweregrad noch nicht bewertet. Betroffene Kennungen: CVE-2026-9636. Technische Details im Tab „Originaltext“; empfohlene Schritte in der Checkliste.
View CSAF Summary Successful exploitation of this vulnerability could allow an attacker to cause a denial-of-service condition. The following versions of Rockwell Automation CompactLogix 5380 ControlLogix 5580 / 1756-EN4TR Communications Module are affected:
ControlLogix 5580 >=V36|<=V37 (CVE-2026-9636) CompactLogix 5380 >=V36|<=V37 (CVE-2026-9636) GuardLogix 5580 >=V36|<=V37 (CVE-2026-9636) Compact GuardLogix 5380 >=V36|<=V37 (CVE-2026-9636) 1756-EN4TR V6.001 (CVE-2026-9636) 1756-EN4TR V7.001 (CVE-2026-9636)
CVSS Vendor Equipment Vulnerabilities
v3 5.9 Rockwell Automation Rockwell Automation CompactLogix 5380 ControlLogix 5580 / 1756-EN4TR Communications Module Improper Check for Certificate Revocation
Background
Critical Infrastructure Sectors: Critical Manufacturing Countries/Areas Deployed: Worldwide Company Headquarters Location: United States
Vulnerabilities
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CVE-2026-9636
A security issue exists within CompactLogix 5380, ControlLogix 5580, and EN4TR 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issue stems from the controller failing to properly reject certificates signed by an intermediate certificate that has been revoked via a Certificate Revocation List (CRL).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. View CVE Details
Affected Products Rockwell Automation CompactLogix 5380 ControlLogix 5580 / 1756-EN4TR Communications Module
Vendor:Rockwell Automation Product Version:Rockwell …