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: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`.
Affected products
openexr: openexr
References7
- github.com/AcademySoftwareFoundation/openexr/security/advisorie… MitigationVendor Advisory
- github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.2.8 ProductRelease Notes
- github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.3.… ProductRelease Notes
- github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.4.… ProductRelease Notes
- access.redhat.com/security/cve/CVE-2026-40244
- bugzilla.redhat.com/show_bug.cgi?id=2459955
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-40244…
Metrics
- CVSS 3.1
-
7.1
HIGH
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H - CVSS 4.0
-
8.4
HIGH
Score source: CNA
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - EPSS — exploit probability
- 0% percentile: 37 · as of 13 November 2026
- CWE
- CWE-190
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