CVE-2026-40250

7.1 HIGH
Published: April 21, 2026 Modified: April 22, 2026
View on NVD

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: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`.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.2.8
Source: security-advisories@github.com
Product Release Notes
https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.3.10
Source: security-advisories@github.com
Product Release Notes
https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.4.10
Source: security-advisories@github.com
Product Release Notes
https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-m5qw-23x2-6phj
Source: security-advisories@github.com
Mitigation Vendor Advisory

4 reference(s) from NVD

Quick Stats

CVSS v3 Score
7.1 / 10.0
EPSS (Exploit Probability)
0.4%
36th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

openexr