PT-2026-33909 · Academy Software Foundation · Openexr

Published 2026-04-21 · Updated 2026-04-21 · CVE-2026-40250

NVD

CVSS v4.0

8.4

High

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

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:1040 performs chan->width * chan->bytes per element in int32 arithmetic without a (size t) cast. This is the same overflow pattern fixed in other decoders by CVE-2026-34589/34588/34544, 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:1040.

Fix

Integer Overflow

Weakness Enumeration

CWE-190

Related Identifiers

CVE-2026-40250

Affected Products

Openexr

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-40250 · Security Note
• https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.4.10 · Note
• https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.2.8 · Note
• https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-m5qw-23x2-6phj · Note
• https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.3.10 · Note