{"id":"CVE-2026-125220","aliases":[],"cve":{"records":[{"id":"CVE-2026-125220","source":"VulnCheck","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-11-09T18:15:19.167Z","published":"2026-11-09T19:11:34.507Z","modified":"2026-11-09T21:06:55.767Z"}],"publishers":[{"name":"VulnCheck","role":"CNA","organizationId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","modified":"2026-11-09T19:11:34.507Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-11-09T21:06:55.767Z"}],"references":[{"url":"https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/25718","tags":["issue-tracking"],"source":"VulnCheck"},{"url":"https://github.com/FFmpeg/FFmpeg/commit/db77b0b8318ddb38b5a3227724da088a325a4308","tags":["patch"],"source":"VulnCheck"},{"url":"https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/mimic.c#L403","tags":["technical-description"],"source":"VulnCheck"},{"url":"https://github.com/FFmpeg/FFmpeg","tags":["product"],"source":"VulnCheck"},{"url":"https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-mimic-decoder-deadlock-via-frame-threading-failure","tags":["third-party-advisory"],"source":"VulnCheck"}],"weaknesses":[{"id":"CWE-833","description":"Deadlock","source":"VulnCheck"}],"applicability":[{"source":"VulnCheck","statements":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:*","versionEndIncluding":"9.0.2"}]}]}]}],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-11-09T20:59:47.111648Z","decisions":[{"name":"Exploitation","value":"none"},{"name":"Automatable","value":"no"},{"name":"Technical Impact","value":"partial"}]}]},"title":"FFmpeg through 9.0.2 Mimic Decoder Deadlock via Frame Threading Failure","titleSource":"VulnCheck","descriptionSource":"VulnCheck","description":"FFmpeg through 9.0.2 contains a deadlock vulnerability in mimic_decode_frame() in libavcodec/mimic.c that fails to report frame progress when init_get_bits8() fails. Attackers can supply a crafted file with an oversized Mimic intra frame followed by inter frames to hang frame-threaded decoding indefinitely.","score":6.8,"severity":"medium","published":"2026-11-09T19:11:34.507Z","modified":"2026-11-09T21:06:55.767Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"FFmpeg","name":"FFmpeg","platforms":[],"versions":[{"version":"0","status":"affected","lessThanOrEqual":"9.0.2","versionType":"semver"}],"defaultStatus":"unaffected","packageURL":"pkg:github/ffmpeg/ffmpeg","cpes":[],"source":"VulnCheck","url":"https://www.cve.org/CVERecord?id=CVE-2026-125220"}],"remediation":[],"references":["https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/25718","https://github.com/FFmpeg/FFmpeg/commit/db77b0b8318ddb38b5a3227724da088a325a4308","https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/mimic.c#L403","https://github.com/FFmpeg/FFmpeg","https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-mimic-decoder-deadlock-via-frame-threading-failure"],"sources":[{"name":"CVE","id":"CVE-2026-125220","modified":"2026-11-09T21:06:55.767Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-125220"}],"assessments":[{"source":"VulnCheck","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","score":6.8},{"source":"VulnCheck","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","score":5.5}],"sourceAffected":[],"observedAt":"2026-11-09T21:16:56.123Z","kev":{"status":"not-listed","checkedAt":"2026-11-15T03:00:33.317Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-11-10T02:30:32.623Z","attemptedAt":"2026-11-10T02:30:32.623Z"},{"source":"GHSA","status":"available","checkedAt":"2026-11-10T02:30:31.585Z","attemptedAt":"2026-11-10T02:30:31.585Z"},{"source":"EUVD","status":"available","checkedAt":"2026-11-10T02:30:31.038Z","attemptedAt":"2026-11-10T02:30:31.038Z"},{"source":"EPSS","status":"no-result","checkedAt":"2026-11-10T02:30:31.038Z","attemptedAt":"2026-11-10T02:30:31.038Z"}],"evidence":[{"source":"ENISA EUVD","id":"EUVD-2026-120309","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-120309","modified":"Nov 9, 2026, 9:06:55 PM","score":6.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","checkedAt":"2026-11-10T02:30:31.038Z"},{"source":"GitHub Advisory Database","id":"GHSA-9qcx-2h2m-6q99","url":"https://github.com/advisories/GHSA-9qcx-2h2m-6q99","modified":"2026-11-09T21:32:06Z","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","checkedAt":"2026-11-10T02:30:31.585Z"},{"source":"NVD","id":"CVE-2026-125220","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-125220","modified":"2026-11-09T22:18:44.840","score":6.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/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","checkedAt":"2026-11-10T02:30:32.623Z"},{"source":"NVD","id":"CVE-2026-125220","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-125220","modified":"2026-11-09T22:18:44.840","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","checkedAt":"2026-11-10T02:30:32.623Z"}],"aiSummary":{"text":"FFmpeg through 9.0.2 has a deadlock vulnerability in the Mimic decoder. Attackers can cause a hang with a crafted file.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-11-09T19:41:11.611Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-125220"}]}}