{"id":"JLSEC-2026-1187","summary":"FFmpeg 7.0 through 8.1.2, fixed in commit 4da9812, contains a heap out-of-bounds write...","details":"FFmpeg 7.0 through 8.1.2, fixed in commit 4da9812, contains a heap out-of-bounds write vulnerability in the `vf_quirc` filter that allows an attacker to corrupt heap memory by supplying a crafted PGS/SUP subtitle file with mismatched frame dimensions. Attackers can provide a subtitle file whose second presentation has larger dimensions than its first, causing `av_image_copy_plane()` to copy data exceeding the initial allocation size into the undersized libquirc grayscale image buffer, resulting in heap corruption and process crash with potential for code execution.","modified":"2026-08-07T13:43:40.160648522Z","published":"2026-08-07T13:27:45.313Z","upstream":["CVE-2026-66041","EUVD-2026-48743","GHSA-frhp-m687-9g3q"],"database_specific":{"license":"CC-BY-4.0","sources":[{"imported":"2026-08-07T05:41:14.813Z","modified":"2026-08-07T00:32:23.513Z","published":"2026-07-24T20:18:21.240Z","url":"https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-66041","html_url":"https://nvd.nist.gov/vuln/detail/CVE-2026-66041","database_specific":{"status":"Analyzed"},"id":"CVE-2026-66041"},{"url":"https://api.github.com/advisories/GHSA-frhp-m687-9g3q","html_url":"https://github.com/advisories/GHSA-frhp-m687-9g3q","id":"GHSA-frhp-m687-9g3q","imported":"2026-08-07T05:42:17.934Z","modified":"2026-07-24T21:32:28Z","published":"2026-07-24T21:32:22Z"},{"html_url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-48743","id":"EUVD-2026-48743","imported":"2026-08-07T05:41:15.246Z","modified":"2026-07-29T03:55:36Z","published":"2026-07-24T19:54:11Z","url":"https://euvdservices.enisa.europa.eu/api/enisaid?id=EUVD-2026-48743"}]},"references":[{"type":"WEB","url":"https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/4da9812e25894fb51d62a8875cfa8eb39b5e20f5"},{"type":"WEB","url":"https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23625"},{"type":"WEB","url":"https://github.com/advisories/GHSA-frhp-m687-9g3q"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-66041"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/ffmpeg-heap-out-of-bounds-write-via-vf-quirc-filter"}],"affected":[{"package":{"name":"FFMPEG_jll","ecosystem":"Julia","purl":"pkg:julia/FFMPEG_jll?uuid=b22a6f82-2f65-5046-a5b2-351ab43fb4e5"},"ranges":[{"type":"SEMVER","events":[{"introduced":"7.1.0+0"},{"fixed":"9.0.0+0"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-1187.json"}},{"package":{"name":"FFMPEG_nogpl_jll","ecosystem":"Julia","purl":"pkg:julia/FFMPEG_nogpl_jll?uuid=a6892c6b-5768-548c-b024-ff8dabf482c5"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"9.0.0+0"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-1187.json"}},{"package":{"name":"FFplay_jll","ecosystem":"Julia","purl":"pkg:julia/FFplay_jll?uuid=c4dce911-e170-5107-8314-c7bdc6785395"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-1187.json"}}],"schema_version":"1.8.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/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"}]}