AIKIDO-2026-64261
AcademySoftwareFoundation.openexr is vulnerable to Out-of-bounds Write
61
Medium Risk
This Affects:
AcademySoftwareFoundation.openexrTL;DR
The exrmetrics command-line tool computes the pixel count of a deep tiled image as a 64-bit value but passes it to a vector resize that truncates on 32-bit builds, undersizing the sample-count table. The deep tiled reader then copies sample-count data for the declared image dimensions into that truncated vector, writing past the end of the allocation. A crafted deep tiled file with very large dimensions run through a 32-bit exrmetrics produces a heap buffer overflow and crash. The fix rejects or correctly sizes the oversized sample-count 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) exrmetrics tool on untrusted deep tiled EXR files.
Background info
AcademySoftwareFoundation.openexr is vulnerable to Out-of-bounds Write in versions 3.3.0 - 3.4.13.
How to fix this
Upgrade the AcademySoftwareFoundation.openexr library to the patch version.
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