{"schema":"threatline.record/2","record":{"id":"CVE-2024-4978","aliases":[],"summary":"Justice AV Solutions (JAVS) Viewer Installer Embedded Malicious Code Vulnerability","details":"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.","categories":["Unclassified"],"product":"Viewer ","vendor":"Justice AV Solutions","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2024-4978","source_modified_at":"2025-10-21T23:05:17.733Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Viewer","vendor":"Justice AV Solutions","versions":[{"status":"affected","version":"8.3.7.250"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":8.4,"severity":"High","kev":{"listed":true,"date_added":"2024-05-29","due_date":"2024-06-19","required_action":"Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.","ransomware_campaign_use":"Unknown"},"epss":{"probability":0.26937,"percentile":0.98042,"score_date":"2026-10-23"},"published_at":"2024-05-23T01:56:37.946Z","modified_at":"2025-10-21T23:05:17.733Z","provenance":[{"source":"CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23T17:00:09.9001Z"},{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2024-4978","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2025-10-21T23:05:17.733Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2024-4978","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CISA KEV","CVE List","EPSS"],"references":[{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-4978","source":"CISA KEV"},{"source":"CVE List","url":"https://twitter.com/2RunJack2/status/1775052981966377148","tags":["x_transferred"]},{"source":"CVE List","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":["x_transferred"]},{"source":"CVE List","url":"https://www.javs.com/downloads/","tags":["x_transferred"]},{"source":"CVE List","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-4978","tags":["government-resource"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"active","automatable":"no","technical_impact":"total","assessed_at":"2024-05-30T11:12:54.307588Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2025-10-21T23:05:17.733Z","content_hash":"f86ac128403362a02b11eae8e92fcdc73daf8cc42313d9dab891d7d76a99103c"}}