Out-of-bounds Read Vulnerability in OpenEXR by Academy Software Foundation
CVE-2026-65979

6.7MEDIUM

Key Information:

Vendor

Academysoftwarefoundation

Status
Openexr
Vendor
CVE Published:
25 August 2026

What is CVE-2026-65979?

The OpenEXR image format, crucial for the motion picture industry, contains a significant flaw in its HTJ2K decoder. Versions 3.4.0 to 3.4.12 do not adequately validate the header-length field (PLEN) from compressed data. This oversight allows attackers to exploit the vulnerability when decoding untrusted EXR files, potentially leading to out-of-bounds memory reads. This risk is resolved in version 3.4.13. Ensuring that your applications are upgraded can mitigate exposure to this type of attack.

Affected Version(s)

openexr >= 3.4.0, < 3.4.13

References

https://github.com/AcademySoftwareFoundation/openexr/secu...
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https://github.com/AcademySoftwareFoundation/openexr/comm...
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https://github.com/AcademySoftwareFoundation/openexr/rele...
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CVSS V4

Score:
6.7
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.