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Rockwell Automation CompactLogix 5380 ControlLogix 5580 / 1756-EN4TR Communications Module
CVE-2026-9636
July 30, 2026 · CISA (US-CERT) · Severity: HIGH
View CSAF Summary Successful exploitation of this vulnerability could allow an attacker to cause a denial-of-service condition.
Key Takeaways
- Rockwell Automation CompactLogix 5380 ControlLogix 5580 / 17 — HIGH severity involving CVE-2026-9636
- CISA advisory provides indicators of compromise and mitigation guidance
- Organizations should review and apply recommended mitigations promptly