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CVE-2024-4978

8.4
HIGHCVSS v3.1 Base Score
12.81%
LOW RiskEPSS (94th percentile)
KEV

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.

Published: 5/23/2024
Modified: 10/24/2025
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ACTIVELY EXPLOITED IN THE WILD

This vulnerability is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

Vulnerability Name:

Justice AV Solutions (JAVS) Viewer Installer Embedded Malicious Code Vulnerability

Vendor / Product:

Justice AV Solutions Viewer

Required Action:

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

Due Date: 6/19/2024(OVERDUE)
Added to KEV:

5/29/2024

Notes:

Please follow the vendor’s instructions as outlined in the public statements at https://www.rapid7.com/blog/post/2024/05/23/cve-2024-4978-backdoored-justice-av-solutions-viewer-software-used-in-apparent-supply-chain-attack#remediation and https://www.javs.com/downloads; https://nvd.nist.gov/vuln/detail/CVE-2024-4978

Vulnerability Summary

CVSS v3 Score

8.4HIGH

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H

EPSS Score (Exploitation Probability)

12.81%LOW Exploitation Risk
94th percentile

This vulnerability has a 12.81% probability of being exploited in the next 30 days, ranking higher than 94% of all scored CVEs.

CWE Classification

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Same Weakness Type(CWE-506)

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Similar SeverityHIGH