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AIKIDO-2026-426950

AcademySoftwareFoundation.openexr is vulnerable to Heap-based Buffer Overflow

Heap-based Buffer OverflowGHSA-h56j-j82x-w3fp Published Aug 10, 2026

33

Low Risk

This Affects:

C++AcademySoftwareFoundation.openexr
2.0.0 - 3.4.13
Fixed in 3.4.14
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TL;DR

The exrmakepreview tool sizes Array2D buffers from data-window dimensions using arithmetic that truncates on ILP32 builds. A crafted EXR with an oversized data window can therefore cause a heap buffer overflow while exrmakepreview runs on a 32-bit build. The fix rejects or correctly sizes the oversized allocation.

Who does this affect?

You are affected if you are using a version that falls within the vulnerable range and you run the 32-bit (ILP32) exrmakepreview tool on untrusted EXR files.

Background info

AcademySoftwareFoundation.openexr is vulnerable to Heap-based Buffer Overflow in versions 2.0.0 - 3.4.13.

How to fix this

Upgrade the AcademySoftwareFoundation.openexr library to the patch version.

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