CVE-2024-4978

Justice AV Solutions Viewer, javs viewer

Published 23 May 2024 · updated 17 Jun 2026 · Analyzed

8.7 High · CVSS 4.0, CNA

Exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on 29 May 2024, with a remediation deadline of 19 Jun 2024 for US federal agencies.

Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Description

Justice AV Solutions Viewer Setup 8.3.7.250-1 contains a malicious binary when executed and is signed with an unexpected authenticode signature. A remote, privileged threat actor may exploit this vulnerability to execute of unauthorized PowerShell commands.

References

twitter.com/2RunJack2/status/1775052981966377148 · Third Party Advisory
www.javs.com/downloads/ · Broken Link, Product
www.rapid7.com/blog/post/2024/05/23/cve-2024-4978-backdoored-justice-av-solutions-viewer-software-used-in-apparent-supply-chain-attack/ · Exploit, Third Party Advisory
www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-4978 · US Government Resource