CVE-2017-8906: Multicorewareinc x265 High Efficiency Video Coding

Medium severity, CVSS 5.5. EPSS: 0.8% chance of exploitation in the next 30 days.

An integer underflow vulnerability exists in pixel-a.asm, the x86 assembly code for planeClipAndMax() in MulticoreWare x265 through 2.4, as used by the x265_encoder_encode dependency in libbpg and other products. A small picture can cause an integer underflow, which leads to a Denial of Service in the process of encoding.

Affected products

• Multicorewareinc x265 High Efficiency Video Coding: up to and including 2.4

Published 2017-05-11. Last modified 2026-06-17.