AIKIDO-2026-546016
AcademySoftwareFoundation.openexr is vulnerable to Heap-based Buffer Overflow
81
High Risk
This Affects:
AcademySoftwareFoundation.openexrTL;DR
OpenEXRCore's deep-image chunk reader caps packed and unpacked size fields at INT_MAX but omits the same cap on the sample-count table size. On 32-bit (ILP32) builds a crafted deep EXR can declare a sample-count table size at or above 2^32, so the value truncates when the scratch buffer is allocated while the full 64-bit byte count is still read into it. This yields an undersized allocation and a heap buffer overflow when the sample-count table is read. The fix rejects sample-count table sizes above INT_MAX before allocation.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and you run a 32-bit (ILP32) build that decodes untrusted deep EXR files.
Background info
AcademySoftwareFoundation.openexr is vulnerable to Heap-based Buffer Overflow in versions 3.1.0 - 3.4.13.
How to fix this
Upgrade the AcademySoftwareFoundation.openexr library to the patch version.
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SOC 2Compliant
ISO 27001Compliant