AIKIDO-2026-428461
AcademySoftwareFoundation.openexr is vulnerable to Out-of-bounds Read
55
Medium Risk
This Affects:
AcademySoftwareFoundation.openexrTL;DR
OpenEXR's HTJ2K decoder parses a chunk header-length field (PLEN) and advances the compressed-buffer pointer by that length without first rejecting values larger than the available compressed data. A crafted HTJ2K EXR with an oversized PLEN therefore causes out-of-bounds pointer arithmetic and an out-of-bounds read during decode, which can abort hardened builds. The fix validates the HTJ2K chunk header length before decode.
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.
Background info
AcademySoftwareFoundation.openexr is vulnerable to Out-of-bounds Read in versions 3.4.0 - 3.4.12.
How to fix this
Upgrade the AcademySoftwareFoundation.openexr library to the patch version.
Links
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