CVE-2026-43906 HIGH

CVE-2026-43906: OpenImageIO: HEIF Heap overflow

Vendor Academysoftwarefoundation
Product OpenImageIO
Weakness CWE-122
Published May 14, 2026
Last update May 15, 2026

CVSS base score

8.5/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

What the vulnerability does

01Description

OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.18.0 and 3.1.13.0, a heap-based buffer overflow in the HEIF decoder of OpenImageIO allows out-of-bounds writes via crafted images due to a subimage metadata mismatch, leading to memory corruption and potential code execution. This vulnerability is fixed in 3.0.18.0 and 3.1.13.0.

Key dates

02Disclosure timeline

May 14, 2026 CVE published
May 15, 2026 Record updated