Helpsystems · Cobalt Strike · 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.