Justice AV Solutions (JAVS) Viewer Installer Embedded Malicious Code Vulnerability
Justice AV Solutions — Viewer
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.
8.4
26.9%
Vector breakdown
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- High
- User interaction
- Required
- Scope
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H
- Published
- May 23, 2024
- Modified
- Oct 21, 2025
- Added to KEV
- May 29, 2024
- Federal patch due
- Jun 19, 2024
CISA required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Weakness classification
Proof-of-concept & exploitation references
Weaponization
Public repositories whose name or description references CVE-2024-4978, found via a live GitHub search at request time. These are community-sourced signals, not a verified working exploit — cross-check each one before relying on it, and treat higher star counts and recent activity as (weak) corroboration, not proof.
No public GitHub repositories referencing CVE-2024-4978 were found at last check. Absence here is not proof no exploit exists — see the references below for vendor advisories and write-ups.
References
Frequently asked questions
What is CVE-2024-4978?
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.
How severe is CVE-2024-4978?
CVE-2024-4978 has a CVSS base score of 8.4 out of 10 (CVSS 3.1).
Is CVE-2024-4978 actively exploited in the wild?
Yes. CVE-2024-4978 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added May 29, 2024, meaning CISA has confirmed evidence of active exploitation.
What is the EPSS score for CVE-2024-4978?
26.9% - meaning FIRST.org's EPSS model estimates a 26.9% probability this vulnerability will be exploited in the wild within 30 days (98% percentile among all scored CVEs).
What type of vulnerability is CVE-2024-4978?
CVE-2024-4978 is classified under CWE-506 (CWE-506 Embedded Malicious Code).
Cross-checked against
Impactr finds and proves whether CVE-2024-4978 — or flaws like it — are actually reachable in your own web apps and APIs, with a reproducible exploit as evidence.