HIGH

CVE-2021-36798

CVSS v3

7.5

HIGH

EPSS Score

27.7%

exploit probability

CISA KEV

No

known exploited

Exploitation

SSVC status

Description

A Denial-of-Service (DoS) vulnerability was discovered in Team Server in HelpSystems Cobalt Strike 4.2 and 4.3. It allows remote attackers to crash the C2 server thread and block beacons' communication with it.

Technical details

Published
8/9/2021

Frequently asked questions

What is CVE-2021-36798?

A Denial-of-Service (DoS) vulnerability was discovered in Team Server in HelpSystems Cobalt Strike 4.2 and 4.3. It allows remote attackers to crash the C2 server thread and block beacons' communication with it.

Is CVE-2021-36798 actively exploited?

Active exploitation of CVE-2021-36798 has not been confirmed. The EPSS score is 27.7%, indicating the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-36798?

CVE-2021-36798 has a CVSS v3 base score of 7.5 (HIGH severity).

Is CVE-2021-36798 affecting your environment?

Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.