AIKIDO-2026-556178
OpenEXR is vulnerable to Stack-based Buffer Overflow
55
Medium Risk
This Affects:
OpenEXRTL;DR
OpenEXR's HTJ2K path, embedded in the PyPI OpenEXR extension, accepts JPEG 2000 SIZ image-offset and tile-grid fields where the first tile does not intersect the declared image. A crafted HTJ2K EXR can therefore cause a stack buffer overflow during decode through the Python bindings. The fix rejects invalid SIZ geometries before decode proceeds.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and you decode untrusted HTJ2K-compressed EXR files through the OpenEXR Python bindings.
Background info
OpenEXR is vulnerable to Stack-based Buffer Overflow in versions 3.4.0 - 3.4.13.
How to fix this
Upgrade the OpenEXR library to the patch version.
Links
Fix Commits
github.com/AcademySoftwareFoundation/openexr/commit/45521f92104373b5c850f27f2d4659ab6759e848github.com/AcademySoftwareFoundation/openexr/commit/85009d840cc085aa96ad03ae76fa6463defeb0e5
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