{"affected":[{"defaultStatus":"unaffected","ecosystem":"github","packageName":"ffmpeg/ffmpeg","product":"FFmpeg","source":"CNA: VulnCheck","vendor":"FFmpeg","versions":[{"lessThanOrEqual":"9.0.2","status":"affected","version":"0","versionType":"semver"}]}],"cveId":"CVE-2026-125206","cwes":["CWE-127"],"description":"FFmpeg through 9.0.2 contains an out-of-bounds read vulnerability in the prores_ks encoder's get_alpha_data() that reads before the blocks buffer for interlaced frames with odd heights. Attackers can supply video with alpha and odd height encoded to interlaced ProRes 4444, causing out-of-bounds memory to be encoded into the output alpha plane.","epss":{"date":"2026-11-12","percentile":0.0195,"score":0.00121},"exploits":[],"kev":null,"metrics":[{"score":2,"severity":"low","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0"},{"score":2.5,"severity":"low","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N","version":"3.1"},{"score":2,"severity":"low","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:L/VI:N/VA:N/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","version":"4.0"},{"score":2.5,"severity":"low","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N","version":"3.1"}],"modifiedAt":1794574432593,"publishedAt":1794251484279,"references":[{"source":"CNA: VulnCheck","tags":["issue-tracking"],"url":"https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24490"},{"source":"CNA: VulnCheck","tags":["patch"],"url":"https://github.com/FFmpeg/FFmpeg/commit/9edd06f8612c242b83bf9e3d14aa85180015a211"},{"source":"CNA: VulnCheck","tags":["technical-description"],"url":"https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/proresenc_kostya.c#L150"},{"source":"CNA: VulnCheck","tags":["product"],"url":"https://github.com/FFmpeg/FFmpeg"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-out-of-bounds-read-via-prores-ks-interlaced-alpha-encoding"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24490"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/FFmpeg/FFmpeg"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/proresenc_kostya.c#L150"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/FFmpeg/FFmpeg/commit/9edd06f8612c242b83bf9e3d14aa85180015a211"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-out-of-bounds-read-via-prores-ks-interlaced-alpha-encoding"}],"remediation":[{"kind":"fix","source":"CNA: VulnCheck","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/FFmpeg/FFmpeg/commit/9edd06f8612c242b83bf9e3d14aa85180015a211"}],"revision":"60affcc2d4eb72060a6e2ca69155923f55b2079911ccccfc75e79585fc1f80c3","sources":[{"modifiedAt":1794574432593,"name":"CNA: VulnCheck","retrievedAt":1794575349448,"url":"https://www.cve.org/CVERecord?id=CVE-2026-125206"},{"modifiedAt":1794347190200,"name":"NVD","retrievedAt":1794356417593,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-125206"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794550558920,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-125206"}],"ssvc":{"assessedAt":1794574330335,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"FFmpeg through 9.0.2 Out-of-Bounds Read via prores_ks Interlaced Alpha Encoding","updatedAt":1794575349448}