{"cve":"CVE-2014-5271","nvd":{"published":"2014-11-03T16:55:05.573","modified":"2026-06-17T00:11:18.723","status":"Modified","description":"Heap-based buffer overflow in the encode_slice function in libavcodec/proresenc_kostya.c in FFMpeg before 1.1.14, 1.2.x before 1.2.8, 2.x before 2.2.7, and 2.3.x before 2.3.3 and Libav before 10.5 allows remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via unspecified vectors.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-119"],"references":["http://git.videolan.org/?p=ffmpeg.git%3Ba=commit%3Bh=52b81ff4635c077b2bc8b8d3637d933b6629d803","http://www.osvdb.org/111725","http://www.securityfocus.com/bid/69250","https://security.gentoo.org/glsa/201603-06","https://www.ffmpeg.org/security.html"],"products":["ffmpeg:ffmpeg","libav:libav"],"source":"nvd","synced_at":"2026-10-19T20:34:45.729216538+00:00"},"epss":{"cve":"CVE-2014-5271","score":0.04697,"percentile":0.91802,"date":"2026-11-01"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}