CVE-2024-4978: Justice AV Solutions (JAVS) Viewer Installer Embedded Malicious Code Vulnerability

High severity, CVSS 8.4. Actively exploited: in CISA KEV since 2024-05-29. EPSS: 26.9% chance of exploitation in the next 30 days.

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.

Affected products

• Javs Javs Viewer: version 8.3.7.250 only

Published 2024-05-23. Last modified 2026-06-17.