Description
OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. In versions 3.4.0 through 3.4.9, 3.3.0 through 3.3.9, and 3.2.0 through 3.2.7, `internal_dwa_compressor.h:1040` performs `chan->width * chan->bytes_per_element` in `int32` arithmetic without a `(size_t)` cast. This is the same overflow pattern fixed in other decoders by CVE-2026-34589/34588/34544, but this line was missed. Versions 3.4.10, 3.3.10, and 3.2.8 contain a fix that addresses `internal_dwa_compressor.h:1040`.
Metrics
CVSS 3.1 7.1/10
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| AcademySoftwareFoundation | openexr | >= 3.2.0, < 3.2.8; >= 3.3.0, < 3.3.10; >= 3.4.0, < 3.4.10 |
References
- https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.2.8Product, Release Notes
- https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.3.10Product, Release Notes
- https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.4.10Product, Release Notes
- https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-m5qw-23x2-6phjMitigation, Vendor Advisory
Timeline
- Published
- Apr 21, 2026
- Last modified
- Oct 26, 2026
- NVD status
- Analyzed