{"id":"CVE-2026-75142","aliases":[],"title":"FFmpeg Stack Buffer Overflow in MPEG-PS Muxer via mpegenc.c","titleSource":"VulnCheck","descriptionSource":"VulnCheck","products":[{"vendor":"FFmpeg","name":"FFmpeg","platforms":[],"versions":[{"version":"0","status":"affected","lessThan":"9d786e4b5e9b8482651928574de33772aeee7be1","versionType":"git"}],"defaultStatus":"unaffected","source":"VulnCheck","url":"https://www.cve.org/CVERecord?id=CVE-2026-75142"}],"remediation":[],"description":"FFmpeg before commit 9d786e4 contains a stack buffer overflow in the MPEG-PS muxer (libavformat/mpegenc.c). When muxing input with more streams than the muxer's fixed-size stack buffer accommodates, the buffer is overflowed. A crafted input with an excessive number of streams triggers the overflow during MPEG-PS muxing.","severity":"high","score":8.5,"published":"2026-08-19T16:24:57.738Z","modified":"2026-10-27T10:14:30.175Z","withdrawn":false,"knownExploited":false,"affected":[],"references":["https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24087","https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/9d786e4b5e9b8482651928574de33772aeee7be1","https://www.vulncheck.com/advisories/ffmpeg-stack-buffer-overflow-in-mpeg-ps-muxer-via-mpegenc-c"],"sources":[{"name":"CVE","id":"CVE-2026-75142","modified":"2026-10-27T10:14:30.175Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-75142"}],"assessments":[{"source":"VulnCheck","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","score":8.5},{"source":"VulnCheck","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","score":7.8}],"sourceAffected":[],"kev":{"status":"not-listed","checkedAt":"2026-10-28T19:10:31.056Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[]}