CVE-2026-63635

OpenImageIO: PSD RawColor invalid color mode causes global out-of-bounds read and allocation DoS

MEDIUM
5.5
CVSS Score
Published: September 18, 2026 at 03:39 PM UTC
Updated: September 29, 2026 at 06:55 PM UTC
2 products affected across 2 vendorsOpenImageIOOpenImageIO

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.2%
SSVC
PoC

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 3.0.21.03.1.0.0 ≤ v ≤ 3.1.16.03.2.0.0 dev3.2.0.2 dev
Affected range stops below 3.0.21.0, so it looks safe — our inference, not a vendor statement
v < 3.0.21.0v < 3.1.16.0v < 3.2.0.3-beta1
Affected range stops below 3.0.21.0, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.1.16.0, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.2.0.3-beta1, so it looks safe — our inference, not a vendor statement

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.5MEDIUMGitHub_M
Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-125CWE-129

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