CVE-2022-39197 Fortra CVE debrief

Who should care

Organizations running Fortra Cobalt Strike Teamserver, especially administrators and security teams responsible for patching, web access controls, and monitoring of Teamserver deployments. Because CISA lists this CVE in KEV, affected environments should prioritize it quickly.

Technical summary

The supplied corpus identifies CVE-2022-39197 as a Teamserver cross-site scripting (XSS) issue affecting Fortra Cobalt Strike. CISA’s KEV entry marks it as known exploited and references a vendor out-of-band update for Cobalt Strike 4.7.1. No CVSS score was included in the supplied data.

Defensive priority

High — CISA KEV-listed and known exploited.

Recommended defensive actions

• Apply Fortra’s vendor instructions and update affected Cobalt Strike deployments to the remediated release referenced in the official advisory.
• Confirm whether any Teamserver instances are exposed or unnecessary, and reduce exposure where possible until remediation is complete.
• Review access logs and administrative activity around Teamserver for suspicious behavior during the exposure window.
• Use the CISA KEV due date (2023-04-20) as the remediation deadline for affected assets.

Evidence notes

CISA published the KEV entry on 2023-03-30 and set a due date of 2023-04-20. The source item metadata states: "Apply updates per vendor instructions." Its notes reference the vendor’s out-of-band update at cobaltstrike.com/blog/out-of-band-update-cobalt-strike-4-7-1/ and the NVD entry for CVE-2022-39197. The supplied corpus does not include a CVSS score.

Official resources