Buffer Overflow Vulnerability in OpenEXR Software from Academy Software Foundation
CVE-2026-40250

8.4HIGH

Key Information:

Status
Vendor
CVE Published:
21 April 2026

What is CVE-2026-40250?

Versions 3.2.0 through 3.4.9 of OpenEXR, a widely used image storage format for the film industry, are affected by a buffer overflow vulnerability. This issue arises from incorrect integer arithmetic within the internal_dwa_compressor.h file, leading to potential overflow conditions due to lack of proper type casting. It's important to upgrade to versions 3.2.8, 3.3.10, or 3.4.10, which include specific fixes addressing this flaw.

Affected Version(s)

openexr >= 3.2.0, < 3.2.8 < 3.2.0, 3.2.8

openexr >= 3.3.0, < 3.3.10 < 3.3.0, 3.3.10

openexr >= 3.4.0, < 3.4.10 < 3.4.0, 3.4.10

References

CVSS V4

Score:
8.4
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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