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…
Browse: All 2024 CVEs · All vendors
- CVSS score
- 8.4 High
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H- CISA KEV
- Yes — actively exploited (added 2024-05-29, remediation due 2024-06-19)
- Weakness (CWE)
- CWE-506, NVD-CWE-Other
- Published
- 2024-05-23
- Last modified
- 2026-06-17
- NVD status
- Analyzed
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.
Affected products
- javs javs viewer
Affected ranges per NVD CPE data; confirm exact versions in the vendor advisory.
Required action (CISA)
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. Federal remediation deadline: 2024-06-19.
How to prioritize this
This vulnerability is on the CISA KEV list, meaning it is being actively exploited — treat it as urgent regardless of the raw CVSS number. Use the live CVE lookup for the latest NVD data, and the CVSS 3.1 calculator to model your own environmental score.
References
- https://twitter.com/2RunJack2/status/1775052981966377148
- https://www.javs.com/downloads/
- https://www.rapid7.com/blog/post/2024/05/23/cve-2024-4978-backdoored-justice-av-solutions-viewer-software-used-in-apparent-supply-chain-attack/
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-4978
FAQ
Is CVE-2024-4978 actively exploited?
Yes. CISA added CVE-2024-4978 to its Known Exploited Vulnerabilities (KEV) catalog on 2024-05-29, with a federal remediation deadline of 2024-06-19. A KEV listing means real-world exploitation is confirmed, so patching this should be prioritized above many higher-CVSS bugs that aren't being exploited.
What is the CVSS score of CVE-2024-4978?
CVE-2024-4978 has a CVSS base score of 8.4 (High). Its vector string is CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H.
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Data source: NVD & CISA KEV. Shown as-is; nothing added. Last generated from NVD data — re-check the live tool for updates.
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