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CVE-2022-39197: Fortra Cobalt Strike Teamserver Cross-Site Scripting (XSS) Vulnerability

criticalknown exploitedpublic exploitCVE-2022-39197
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
Fortra Cobalt Strike contains a cross-site scripting (XSS) vulnerability in Teamserver that would allow an attacker to set a malformed username in the Beacon configuration, allowing them to execute code remotely.

CSIRTS triage

vendor: Fortraproduct: Cobalt StrikeCross-site scripting
What
Cobalt Strike contains a cross-site scripting vulnerability in Teamserver.
Who is affected
Users of Fortra Cobalt Strike Teamserver.
Urgency
Urgent remediation is necessary as the vulnerability is actively exploited.
Action
Update Cobalt Strike Teamserver to the latest version.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2023-03-30
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2022-39197

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2022-39197coverage & exploitation statusNVD · CVE.org

Recent advisories for Fortra Cobalt Strike

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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