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:1722` performs `curc->width * curc->height` in `int32` arithmetic without a `(size_t)` cast. This is the same overflow pattern fixed in other locations by the recent CVE-2026-34589 batch, 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:1722`.
Fix
Patch, vendor advisory and mitigation references on NVD 1
- https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-j526-66f6-fxhx Mitigation, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 8.4 · openexrNVD modified 2026-10-26 21:10
Affected (CPE criteria) 1
cpe:2.3:a:openexr:openexr:*:*:*:*:*:*:*:*
References 7
- https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.2.8 Product, Release Notes
- https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.3.10 Product, Release Notes
- https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.4.10 Product, Release Notes
- https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-j526-66f6-fxhx Mitigation, Vendor Advisory
- https://access.redhat.com/security/cve/CVE-2026-40244
- https://bugzilla.redhat.com/show_bug.cgi?id=2459955
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-40244.json