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.

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The v6.40 release of Rockwell Automation FactoryTalk® Policy Manager CVE-2021-22681 https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.PN1550.html  and CVE-2022-1161 https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.PN1585.html  by implementing CIP security and did not update to the versions of the software CVE-2022-1161 https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.PN1585.html  and CVE-2022-1161. https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.PN1585.html

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Rockwell Automation RSLinx Enterprise Software (LogReceiver.exe) CPR9, CPR9-SR1, CPR9-SR2, CPR9-SR3, CPR9-SR4, CPR9-SR5, CPR9-SR5.1, and CPR9-SR6 does not handle input correctly and results in a logic error if it receives a datagram with an incorrect value in the “Record Data Size” field. By sending a datagram to the service over Port 4444/UDP with the “Record Data Size” field modified to an oversized value, an attacker could cause an out-of-bounds read access violation that leads to a service crash. The service can be recovered with a manual reboot. The patches and details pertaining to this vulnerability can be found at the following Rockwell Automation Security Advisory link (login is required): https://rockwellautomation.custhelp.com/app/answers/detail/a_id/537599