{"id":"CVE-2026-75142","title":"FFmpeg before commit 9d786e4 contains a stack buffer overflow in the MPEG-PS muxer (libavformat/mpegenc.c)","summary":"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 in…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","cwe":["CWE-121"],"published":"2026-08-19","updated":"2026-09-09","sourceUpdated":"2026-09-09T20:36:38.867","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-75142","references":[{"url":"https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/9d786e4b5e9b8482651928574de33772aeee7be1","label":"disclosure@vulncheck.com"},{"url":"https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24087","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/ffmpeg-stack-buffer-overflow-in-mpeg-ps-muxer-via-mpegenc-c","label":"disclosure@vulncheck.com"}],"tags":["nvd"],"epss":0.00137,"epssPercentile":0.03484,"ingestedAt":"2026-09-09T21:22:45.540Z","slug":"CVE-2026-75142","body":"## Overview\n\nFFmpeg 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}