CISA KEV · Known exploitedMedium

CVE-2022-39197

Fortra Cobalt Strike

An XSS (Cross Site Scripting) vulnerability was found in HelpSystems Cobalt Strike through 4.7 that allowed a remote attacker to execute HTML on the Cobalt Strike teamserver. To exploit the vulnerability, one must first inspect a Cobalt Strike payload, and then modify the username field in the payload (or create a new payload with the extracted information and then modify that username field to be malformed).

CVSS: 6.1
EPSS: 46.4%
CISA KEV: Listed
Published: 2022.09.22

PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV

Exploit probability46.4%

Technical severityCVSS 6.1

Vulnerability overview

Affected product and versions

Product: Fortra Cobalt Strike
Affected versions: < 4.7.1
Fixed versions: 4.7.1

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

CISA required action

Apply updates per vendor instructions.

Due date: 2023.04.20

1
Identify
Confirm that Fortra Cobalt Strike and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE: CWE-20, CWE-79
KEV added: 2023.03.30
Ransomware use: 미확인