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.
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