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CVE-2021-36798

7.5 highEPSS 4.3%

High (7.5) in helpsystems cobalt strike. EPSS 4.3% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

7.5 high
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
4.3% chance of exploitation in the next 30 days; higher than 91% of CVEs (scores of 2026-10-31)
CWE
CWE-770
Published
Modified
Record from
the NVD, synced

Affected

References

Check your stackJSON