CVE-2026-40244OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry.
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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
- 7.1 HIGH (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
- Weakness (CWE)
- CWE-190
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Modified
- Record last updated
- Jul 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
openexr openexr openexr:openexr | from 3.2.0 before 3.2.8; from 3.3.0 before 3.3.10; from 3.4.0 before 3.4.10 | NVD |
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-j526-66f6-fxhxmitigation, 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
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.