{"apiVersion":"1.0","identifier":"CVE-2026-75143","description":"FFmpeg before commit 1c10bcc contains a heap buffer overflow in the RIST protocol reader (libavformat/librist.c). librist_read() ignored its size argument and copied the full received payload length into the caller-provided destination buffer, overflowing it when the payload exceeds the destination size. This is reachable via the async:rist:// URL scheme, where the async wrapper supplies a smaller buffer than the received payload. A remote RIST sender can trigger the overflow by sending a packet whose payload exceeds the caller buffer size.","publishedAt":"2026-08-19T17:21:12","lastModifiedAt":"2026-08-21T04:18:19","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-75143","cvssScore":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","epssProbability":0.00405,"riskScore":1.02,"affectedProduct":"FFmpeg","affectedVersions":"unknown","vulnerabilityType":"Library","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-75143","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-75143","en":"https://www.redsauce.net/en/cves/CVE-2026-75143","fr":"https://www.redsauce.net/fr/cves/CVE-2026-75143","pt":"https://www.redsauce.net/pt/cves/CVE-2026-75143","de":"https://www.redsauce.net/de/cves/CVE-2026-75143","sk":"https://www.redsauce.net/sk/cves/CVE-2026-75143","el":"https://www.redsauce.net/el/cves/CVE-2026-75143"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-75143"}}