Out-of-bounds read in oiio - CVE-2026-63420
Published: August 2, 2026
Vulnerability identifier: #VU140741
CSH Severity: Medium
CVSS v4 BT: 4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2026-63420
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to out-of-bounds read in `interleave_row` when parsing a crafted indexed PSD file with transparency metadata in raw PSD color output mode. A remote attacker can trick the victim into opening a crafted file to cause a denial of service.
User interaction is required to open the crafted PSD file, and exploitation requires `oiio:RawColor=1` or `psd:RawData=1`.
Affected software
oiio
How to mitigate CVE-2026-63420
Install security update from vendor's website.
oiio - update to 3.1.16.0