CVE-2026-43908: Openimageio

High severity, CVSS 8.8. EPSS: 0.5% chance of exploitation in the next 30 days.

OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.18.0 and 3.1.13.0, a signed 32-bit integer overflow in the pixel-loop index expression i * 3 inside ConvertCbYCrYToRGB() causes the function to compute a large negative pointer offset into the output buffer, producing an out-of-bounds write that crashes the process. This vulnerability is fixed in 3.0.18.0 and 3.1.13.0.

Affected products

• Openimageio Openimageio: before 3.0.18.0 (fixed in 3.0.18.0); from 3.1.4.0, before 3.1.13.0 (fixed in 3.1.13.0); version 3.2.0.0 only; version 3.2.0.2 only

Published 2026-05-14. Last modified 2026-06-17.