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CVE-2026-63422

OpenImageIO OpenEXR plugin partial edge tile heap out-of-bounds write

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 3.0.21.0, 3.1.16.0, 3.2.0.3-beta1
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: total

Summary

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.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: total

  3. Record last updated

Affected versions

  • AcademySoftwareFoundation OpenImageIO

    fixed in 3.0.21.0; From 3.1.0.0 · fixed in 3.1.16.0; From 3.2.0.0-dev · fixed in 3.2.0.3-beta1

References 5

GitHub · AcademySoftwareFoundation/OpenImageIO