CVE-2026-63635

MEDIUM CVSS 3.1: 5.5 EPSS 0.20%
Updated Sep 25, 2026
Openimageio
Parameter Value
CVSS 5.5 (MEDIUM)
Type CWE-125 (Out-of-bounds Read), CWE-129 (Improper Validation of Array Index)
Vendor Openimageio
Public PoC Yes

OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1, A crafted psd with an invalid color_mode bypasses normal validation when oiio:rawcolor or psd:rawdata is enabled. psdinput::setup() then uses the attacker-controlled value to index fixed color-mode tables, causing a global out-of-bounds read and potentially a bogus allocation, resulting in denial of service. The affected implementation is identified by src/psd.imageio/psdinput.cpp, PSDInput::validate_header(), PSDInput::setup(), oiio:RawColor, psd:RawData, color_mode, and mode_channel_count, which define the relevant source path, functions, state, and trigger.

This issue is fixed in versions 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1.

Attack Parameters

Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
Required
User action required

Impact Assessment

Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service

CVSS Vector v3.1