CVE-2024-4978

Name: CVE-2024-4978
Creator: NVD / NIST
Published: 2024-05-23T02:15:09.257+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.7/10Actively ExploitedEPSS 26.94%

Last modified Jun 17, 2026

CVE-2024-4978 is a high-severity vulnerability rated 8.7/10 on the CVSS scale. 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.. CISA has confirmed active exploitation in the wild. EPSS estimates a 26.94% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

8.4/10

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

CVSS 4.0

8.7/10

CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

26.94%

97.8th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Jun 19, 2024.

Weakness Enumeration

CWE-506

Affected Software

Vendor	Product	Versions
Javs	Javs Viewer	8.3.7.250

References

https://twitter.com/2RunJack2/status/1775052981966377148Third Party Advisory
https://www.javs.com/downloads/Broken Link, Product
https://www.rapid7.com/blog/post/2024/05/23/cve-2024-4978-backdoored-justice-av-solutions-viewer-software-used-in-apparent-supply-chain-attack/Exploit, Third Party Advisory
https://twitter.com/2RunJack2/status/1775052981966377148Third Party Advisory
https://www.javs.com/downloads/Broken Link, Product
https://www.rapid7.com/blog/post/2024/05/23/cve-2024-4978-backdoored-justice-av-solutions-viewer-software-used-in-apparent-supply-chain-attack/Exploit, Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-4978US Government Resource

Timeline

Published: May 23, 2024
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2024-4978?

How severe is CVE-2024-4978?

CVE-2024-4978 has a CVSS score of 8.7/10 (HIGH severity). The EPSS model estimates a 26.94% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2024-4978?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2024-4978?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST