CVE-2026-40250

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`.

CVSS v3 7.1 HIGH

7.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.2

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.2.8	Product Release Notes
https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.3.10	Product Release Notes
https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.4.10	Product Release Notes
https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-m5qw-23x2-6phj	Mitigation Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:openexr:openexr::::::::
	cpe:2.3:a:openexr:openexr::::::::
	cpe:2.3:a:openexr:openexr::::::::

History

No history.

Information

Published : 2026-04-21 02:16

Updated : 2026-06-17 10:44

NVD link : CVE-2026-40250

Mitre link : CVE-2026-40250

CVE.ORG link : CVE-2026-40250

JSON object : View

Products Affected

openexr

openexr

CWE

CWE-190

Integer Overflow or Wraparound

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