{"id":"CVE-2026-75147","revision":"3bcbee3e879e4048885ade363cc0f76d","records":[{"revision":"3bcbee3e879e4048885ade363cc0f76d","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-75147","aliases":[],"title":"FFmpeg Out-of-Bounds Read in AV1 RTP Packetizer via rtpenc_av1.c","description":"FFmpeg before commit 983dae9 contains an out-of-bounds read in the AV1 RTP packetizer (libavformat/rtpenc_av1.c). The keyframe detection loop that searches for a sequence header OBU advanced its pointer and remaining-size counter by the encoded header length plus the OBU payload size without first bounding the OBU size against the remaining data. A crafted OBU size causes the remaining-size counter to wrap to a positive value, causing the next loop iteration to dereference a pointer beyond the end of the packet buffer. A crafted AV1 input packet muxed to RTP triggers the out-of-bounds read.","state":0,"publishedAt":"2026-08-19T16:29:03.399+00:00","modifiedAt":"2026-08-25T02:19:35.199+00:00","affected":[{"ecosystem":"Vendor product","name":"FFmpeg","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"FFmpeg\",\n                    \"product\": \"FFmpeg\",\n                    \"repo\": \"https://code.ffmpeg.org/FFmpeg/FFmpeg\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"0\",\n                            \"lessThan\": \"983dae9c19f46c87d597598c0fd2f2fcee0ad2f8\",\n                            \"versionType\": \"git\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\",\n                    \"packageURL\": \"pkg:github/FFmpeg/FFmpeg\"\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N","score":6.9,"severity":"MEDIUM"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H","score":7.1,"severity":"HIGH"}],"references":["https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24096","https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/983dae9c19f46c87d597598c0fd2f2fcee0ad2f8","https://www.vulncheck.com/advisories/ffmpeg-out-of-bounds-read-in-av1-rtp-packetizer-via-rtpenc-av1-c"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-75147","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-75147","identifiers":["CVE-2026-75147"]},"retained":false,"historicalAffected":[]}],"coverage":[]}