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CVE PROGRAM SOURCE RECORD8.4 High

CVE-2026-34544

OpenEXR: integer overflow to OOB write in uncompress_b44_impl()

Description

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From version 3.4.0 to before version 3.4.8, a crafted B44 or B44A EXR file can cause an out-of-bounds write in any application that decodes it via exr_decoding_run(). Consequences range from immediate crash (most likely) to corruption of adjacent heap allocations (layout-dependent). This issue has been patched in version 3.4.8.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

AcademySoftwareFoundation openexr

  • >= 3.4.0, < 3.4.8affected

References