Threats / Fortra / CVE-2022-39197
CVE-2022-39197
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
Fortra Cobalt Strike vulnerability
Fortra Cobalt Strike contains a cross-site scripting vulnerability in Teamserver that allows remote code execution through a malformed username in Beacon configuration.
Verdict
Today item — known-exploited.
An attacker can inject malicious scripts via a crafted username parameter in Cobalt Strike's Beacon configuration, leading to arbitrary code execution on the Teamserver. This vulnerability has been exploited in the wild.
01
Is it exploitable?
— the evidence, ranked above the scoreExploit available
Fully weaponized — public exploit code is cataloged for this vulnerability.We link the existence of the exploit; we do not host or redistribute payloads.
Reported exploitation
2 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-03-30).
Probability (EPSS)
EPSS 0.46446 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
Affected: Fortra, Cobalt Strike. Confirm exact fixed builds in the vendor advisory.
Weakness (CWE)
Mapped to CWE-20 Improper Input Validation, CWE-79 Cross-site Scripting (XSS) — weakness family: Web / client.CWE assignment from the public NVD record; the weakness class drives how the flaw is exploited.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I craft a malformed username containing XSS payload in the Beacon configuration.
Business
Attacker gains code execution capability on the Teamserver infrastructure.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I execute arbitrary commands through the injected script within the Teamserver context.
Business
Attacker compromises command and control operations, potentially affecting all connected Beacon instances.
3
Lateral reach — past segmentation narrative 3
Attacker
I maintain persistence and lateral movement through the compromised Teamserver.
Business
Organization loses operational security of its entire attack infrastructure and faces potential data exfiltration.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05