CVE-2026-40244
HIGHDescription
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 v3 Vector
Exploitability
Impact
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
Exploit Intelligence
Low risk: more likely to be exploited than 36% of all known CVEs.
References
- https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.2.8
- https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.3.10
- https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.4.10
- https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-j526-66f6-fxhx
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Start freeThis product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-22.