{"apiVersion":"1.0","identifier":"CVE-2026-75147","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.","publishedAt":"2026-08-19T17:21:13","lastModifiedAt":"2026-08-25T03:16:56","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-75147","cvssScore":7.1,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H","epssProbability":0.00121,"riskScore":0.72,"affectedProduct":"FFmpeg","affectedVersions":"unknown","vulnerabilityType":"Library","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-75147","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-75147","en":"https://www.redsauce.net/en/cves/CVE-2026-75147","fr":"https://www.redsauce.net/fr/cves/CVE-2026-75147","pt":"https://www.redsauce.net/pt/cves/CVE-2026-75147","de":"https://www.redsauce.net/de/cves/CVE-2026-75147","sk":"https://www.redsauce.net/sk/cves/CVE-2026-75147","el":"https://www.redsauce.net/el/cves/CVE-2026-75147"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-75147"}}