CVE-2024-4978
HIGHCISA KEVEPSS 98th pctlDescription
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 to fix
Actively exploited, no published fix found yet
CISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Federal remediation due: 2024-06-19
Mitigation guidance may be in the linked vendor advisories in the References section below.
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CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H
Exploit Intelligence
Very high risk: more likely to be exploited than 98% of all known CVEs.
Justice AV Solutions (JAVS) Viewer Installer Embedded Malicious Code Vulnerability
Justice AV Solutions (JAVS) Viewer installer contains a malicious version of ffmpeg.exe, named fffmpeg.exe (SHA256: 421a4ad2615941b177b6ec4ab5e239c14e62af2ab07c6df1741e2a62223223c4). When run, this creates a backdoor connection to a malicious C2 server.
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Remediation due: 2024-06-19
References
Related Vulnerabilities
Other CWE-506 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2024-3094 | Critical | 10.0 | 86% | - | Fix |
| CVE-2026-33634 | High | 8.8 | 60% | KEV | Fix |
| CVE-2025-30066 | High | 8.6 | 41% | KEV | - |
| CVE-2025-54313 | High | 7.5 | 4.1% | KEV | Fix |
| CVE-2026-45321 | Critical | 9.6 | 2.3% | KEV + Ransom | - |
| CVE-2025-30154 | High | 8.6 | 2.3% | KEV | Fix |
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Markdown
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-10-24.