Heap-based buffer overflow in oiio - CVE-2026-63422
Published: August 2, 2026
Vulnerability identifier: #VU140742
CSH Severity: High
CVSS v4 BT: 5.7 [CVSS:4.0/AV:L/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-2026-63422
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code.
The vulnerability exists due to a heap-based buffer overflow in OpenEXRInput::read_native_tiles() when parsing a crafted tiled OpenEXR image through the ImageInput::read_native_tiles() API. A remote attacker can trick the victim into processing a crafted image to execute arbitrary code.
User interaction is required to open or process a crafted tiled OpenEXR image. The issue is triggered when the requested tile range ends at the image boundary for a partial edge tile.
Affected software
oiio
How to mitigate CVE-2026-63422
Install security update from vendor's website.
oiio - update to 3.1.16.0