Vulnerability Description
OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1, A valid tiled openexr image whose width is not a multiple of its tile width can trigger an overflow when a caller reads a partial edge-tile rectangle. openexrinput::read_native_tiles() copies each row into the caller buffer using the padded whole-tile scanline_stride rather than user_scanline_bytes for the requested rectangle, resulting in a heap out-of-bounds write and memory corruption. The affected implementation is identified by src/openexr.imageio/exrinput.cpp, OpenEXRInput::read_native_tiles(), partial edge tile, user_scanline_bytes, and scanline_stride, which define the relevant source path, functions, state, and trigger. This issue is fixed in versions 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/AcademySoftwareFoundation/OpenImageIO/commit/7303134f13b0f9dc
- https://github.com/AcademySoftwareFoundation/OpenImageIO/pull/5295
- https://github.com/AcademySoftwareFoundation/OpenImageIO/releases/tag/v3.0.21.0
- https://github.com/AcademySoftwareFoundation/OpenImageIO/releases/tag/v3.1.16.0
- https://github.com/AcademySoftwareFoundation/OpenImageIO/security/advisories/GHS
FAQ
What is CVE-2026-63422?
CVE-2026-63422 is a vulnerability with a CVSS score of 7.8 (HIGH). OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1, A valid tiled openexr ...
How severe is CVE-2026-63422?
CVE-2026-63422 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-63422?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.