Heap-based buffer overflow in Openimageio - CVE-2026-43906
Published: May 5, 2026
Vulnerability identifier: #VU129718
CSH Severity: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2026-43906
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Openimageio
Openimageio
Software vendor:
AcademySoftwareFoundation
AcademySoftwareFoundation
Description
The vulnerability allows a remote attacker to execute arbitrary code.
The vulnerability exists due to a heap-based buffer overflow in the HEIF decoder when processing crafted HEIF images with mismatched subimage metadata. A remote attacker can supply a specially crafted image to execute arbitrary code.
The issue occurs when a larger scanline from one subimage is copied into a buffer allocated for a smaller subimage after subimage switching.
Remediation
Install security update from vendor's website.