CVE-2021-36798

Name of the Vulnerable Software and Affected Versions HelpSystems Cobalt Strike versions 4.2 through 4.3

Description A Denial-of-Service (DoS) issue was discovered in Team Server. It allows remote attackers to crash the C2 server thread and block beacons' communication with it.

Recommendations For versions 4.2 and 4.3, consider temporarily restricting access to the Team Server to minimize the risk of exploitation until a patch is available. At the moment, there is no information about a newer version that contains a fix for this vulnerability.