CVE-2017-13666: Multicorewareinc x265

Medium severity, CVSS 5.5. EPSS: 0.4% 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 2.5, as used in libbpg and other products. A small height value can cause an integer underflow, which leads to a crash. This is a different vulnerability than CVE-2017-8906.

Affected products

• Multicorewareinc x265: version 0.1 only; version 0.2 only; version 0.3 only; version 0.4 only; version 0.4.1 only; version 0.5 only; …

Published 2017-08-24. Last modified 2026-06-17.