CVE-2026-40244
highpriority · track · 28EPSS 0.004 · 37 %ileEUUSEPSS · scored 2026-10-27
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`.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5.7–8.4
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (6)
Products and version ranges known to be affected.
also known as (2)
Other names and identifiers for this entity.
sources
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references (13)
External citations — patches, advisories, analysis.
- https://github.com/AcademySoftwareFoundation/openexr/releasesPatchcnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2026-40244cnnvd
- https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.2.8enisa_euvd
- https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.3.10enisa_euvd
- https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.4.10enisa_euvd
- https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-j526-66f6-fxhxenisa_euvd
- https://access.redhat.com/security/cve/CVE-2026-40244nvd
- https://bugzilla.redhat.com/show_bug.cgi?id=2459955nvd
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