Executive brief
OpenImageIO is a widely used library for processing image files in the visual effects and animation industries. A vulnerability in how it handles specific high-resolution image files (DPX format) could allow an attacker to crash applications or potentially execute unauthorized code. This occurs when a user is tricked into opening a specially crafted, large image file, which could lead to data theft or a complete system compromise.
Technical details
A signed 32-bit integer overflow exists in the SwapRGBABytes() function within DPXColorConverter.cpp. The vulnerability is triggered when processing kABGR DPX images with large dimensions where the total pixel count (Width * Height) exceeds INT_MAX/4. This causes the loop index expression 'i * 4' to overflow, resulting in a large negative pointer offset. An attacker can exploit this to achieve a combined out-of-bounds (OOB) read and write primitive. The attack requires a user to open a crafted DPX file (User Interaction required). The issue is resolved in versions 3.0.18.0 and 3.1.13.0.
Affected products
- Academy Software Foundation OpenImageIO < 3.0.18.0, < 3.1.13.0
Timeline
- 2026-05-03: advisory: GitHub advisory published by maintainers
- 2026-05-14: disclosed: CVE published to NVD