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.

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.

A denial-of-service vulnerability exists in the affected products that will cause the device to result in a major nonrecoverable fault (MNRF) when it receives an invalid CIP request. To exploit this vulnerability, a malicious user must chain this exploit with CVE 2021-22681 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.

Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Rockwell Automation ControlLogix ausnutzen, um einen Denial of Service Angriff durchzuführen.