{"id":"CVE-2026-75144","title":"FFmpeg Heap Buffer Overflow in VC-2/Dirac RTP Packetizer","summary":"FFmpeg before commit 1cdeb3c contains a heap buffer overflow vulnerability in the VC-2/Dirac RTP packetizer (libavformat/rtpenc_vc2hq.c) that allows attackers to trigger memory corruption by supplying a crafted Dirac data unit. The packe…","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","cvssSource":"cna","cwe":["CWE-122"],"vendor":"FFmpeg","product":"FFmpeg","affected":["FFmpeg < 1cdeb3c4e7f1f8566d846b9b451e01c376398818"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-08-20T00:00:00+00:00"},"published":"2026-08-19","updated":"2026-10-27","sourceUpdated":"2026-10-27T10:14:31.556Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-75144","references":[{"url":"https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24091","label":"Pull Request"},{"url":"https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/1cdeb3c4e7f1f8566d846b9b451e01c376398818","label":"Patch Commit"},{"url":"https://www.vulncheck.com/advisories/ffmpeg-heap-buffer-overflow-in-vc-2-dirac-rtp-packetizer"}],"tags":["cve.org"],"epss":0.00199,"epssPercentile":0.09654,"ingestedAt":"2026-10-27T16:11:59.276Z","slug":"CVE-2026-75144","body":"## Overview\n\nFFmpeg before commit 1cdeb3c contains a heap buffer overflow vulnerability in the VC-2/Dirac RTP packetizer (libavformat/rtpenc_vc2hq.c) that allows attackers to trigger memory corruption by supplying a crafted Dirac data unit. The packetizer copies an input-derived data unit or fragment size into a fixed-size buffer without an upper bound check, causing a heap buffer overflow when the crafted input is packetized for RTP output.\n\n## Affected\n\n- `FFmpeg < 1cdeb3c4e7f1f8566d846b9b451e01c376398818`\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":[]}