CVE-2014-5271: Ffmpeg

High severity, CVSS 7.5. EPSS: 4.7% chance of exploitation in the next 30 days.

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.

Affected products

• Ffmpeg Ffmpeg: up to and including 1.1.13; version 1.1 only; version 1.1.1 only; version 1.1.2 only; version 1.1.3 only; version 1.1.4 only; …
• Libav Libav: up to and including 10.4; version 0.5 only; version 0.5.1 only; version 0.5.2 only; version 0.5.3 only; version 0.5.4 only; …

Published 2014-11-03. Last modified 2026-06-17.