CVE 2021-22681 https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.PN1550.html  and send a specially crafted CIP message to the device. If exploited, a threat actor could help prevent access to the legitimate user and end connections to connected devices including the workstation. To recover the controllers, a download is required which ends any process that the controller is running.

Rockwell Automation ControlLogix/GuardLogix 5580 and CompactLogix/Compact GuardLogix® 5380 Vulnerable to DoS vulnerability via CIP

A denial-of-service vulnerability exists in the Rockwell Automation affected products when specially crafted packets are sent to the CIP Security Object. If exploited the device will become unavailable and require a factory reset to recover.

Rockwell Automation ControlLogix/GuardLogix 5580 and CompactLogix/Compact GuardLogix® 5380 Controller Denial-of-Service Vulnerability via Input Validation

CVE-2024-7507 IMPACT A denial-of-service vulnerability exists in the affected products. This vulnerability occurs when a malformed PCCC message is received, causing a fault in the controller.

Rockwell Automation ControlLogix/GuardLogix 5580 and CompactLogix/Compact GuardLogix® 5380 Controller Denial-of-Service Vulnerability via Input Validation

CVE-2024-7515 IMPACT A denial-of-service vulnerability exists in the affected products. A malformed PTP management packet can cause a major nonrecoverable fault in the controller.