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CVE PROGRAM SOURCE RECORD8.6 High

CVE-2026-34588

OpenEXR has a signed 32-bit Overflow in PIZ Decoder Leads to OOB Read/Write

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Status
Published
Published
Updated
Assigning organization
GitHub_M

Description

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From 3.1.0 to before 3.2.7, 3.3.9, and 3.4.9, internal_exr_undo_piz() advances the working wavelet pointer with signed 32-bit arithmetic. Because nx, ny, and wcount are int, a crafted EXR file can make this product overflow and wrap. The next channel then decodes from an incorrect address. The wavelet decode path operates in place, so this yields both out-of-bounds reads and out-of-bounds writes. This vulnerability is fixed in 3.2.7, 3.3.9, and 3.4.9.

Affected products

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

AcademySoftwareFoundation openexr

  • >= 3.1.0, <= 3.1.13affected
  • >= 3.2.0, < 3.2.7affected
  • >= 3.3.0, < 3.3.9affected
  • >= 3.4.0, < 3.4.9affected

References