{"id":"CVE-2024-4978","url":"https://www.cyber-defence.io/tools/cve/CVE-2024-4978","generatedAt":"2026-10-31T09:13:13.617Z","title":"Justice AV Solutions (JAVS) Viewer Installer Embedded Malicious Code Vulnerability","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.","published":"2024-05-23T02:15:09.000Z","lastModified":"2026-06-17T08:03:19.000Z","status":"Analyzed","sourceIdentifier":"9119a7d8-5eab-497f-8521-727c672e3725","cvss":{"version":"4.0","score":8.7,"severity":"HIGH","vector":"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/M"},"cwe":["CWE-506"],"affected":["javs/javs viewer"],"epss":{"score":0.26937,"percentile":0.98037,"date":"2026-10-30","history":[]},"kev":{"listed":true,"dateAdded":"2024-05-29","dueDate":"2024-06-19","knownRansomwareCampaignUse":"Unknown","notes":"Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.\nPlease 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"},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"Known to be exploited in the wild (CISA KEV, CISA remediation deadline 19 June 2024). Treat as an emergency change: patch or isolate now, then hunt for prior compromise."},"changes":[],"references":[{"url":"https://twitter.com/2RunJack2/status/1775052981966377148","tags":["Third Party Advisory"],"source":"9119a7d8-5eab-497f-8521-727c672e3725"},{"url":"https://www.javs.com/downloads/","tags":["Broken Link","Product"],"source":"9119a7d8-5eab-497f-8521-727c672e3725"},{"url":"https://www.rapid7.com/blog/post/2024/05/23/cve-2024-4978-backdoored-justice-av-solutions-viewer-software-used-in-apparent-supply-chain-attack/","tags":["Exploit","Third Party Advisory"],"source":"9119a7d8-5eab-497f-8521-727c672e3725"},{"url":"https://twitter.com/2RunJack2/status/1775052981966377148","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.javs.com/downloads/","tags":["Broken Link","Product"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.rapid7.com/blog/post/2024/05/23/cve-2024-4978-backdoored-justice-av-solutions-viewer-software-used-in-apparent-supply-chain-attack/","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-4978","tags":["US Government Resource"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2024-4978","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}