{"id":"CVE-2020-20902","url":"https://www.cyber-defence.io/tools/cve/CVE-2020-20902","generatedAt":"2026-10-27T22:25:03.344Z","title":"A CWE-125: Out-of-bounds read vulnerability exists in long_term_filter function in g729postfilter.c in FFmpeg 4.2.1 during computation of the denominator of pseudo-normalized correlation R'(0), that could result in disclosure of information.","description":"A CWE-125: Out-of-bounds read vulnerability exists in long_term_filter function in g729postfilter.c in FFmpeg 4.2.1 during computation of the denominator of pseudo-normalized correlation R'(0), that could result in disclosure of information.","published":"2021-09-20T16:15:09.000Z","lastModified":"2026-06-17T03:03:27.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N"},"cwe":["CWE-125"],"affected":["ffmpeg/ffmpeg"],"epss":{"score":0.01171,"percentile":0.67204,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (1.17%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"http://git.videolan.org/?p=ffmpeg.git%3Ba=commitdiff%3Bh=0c61661a2cbe1b8b284c80ada1c2fdddf4992cad","source":"cve@mitre.org"},{"url":"https://trac.ffmpeg.org/ticket/8176","tags":["Issue Tracking","Patch","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"http://git.videolan.org/?p=ffmpeg.git%3Ba=commitdiff%3Bh=0c61661a2cbe1b8b284c80ada1c2fdddf4992cad","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://trac.ffmpeg.org/ticket/8176","tags":["Issue Tracking","Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-20902","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."}