CVE-2021-22800

Name of the Vulnerable Software and Affected Versions Modicon M218 Logic Controller versions prior to V5.1.0.6

Description A vulnerability exists due to improper input validation, which could cause a Denial of Service when a crafted packet is sent to the controller over network port 1105/TCP.

Recommendations For versions prior to V5.1.0.6, update to a version newer than V5.1.0.6 to resolve the issue. As a temporary workaround, consider restricting access to network port 1105/TCP to minimize the risk of exploitation.