CVE-2026-21305

Unknown Unknown - Not Provided

Out-of-Bounds Write in Substance3D Painter Enables Code Execution

Publication date: 2026-01-13

Last updated on: 2026-01-13

Assigner: Adobe Systems Incorporated

Description

Substance3D - Painter versions 11.0.3 and earlier are affected by an out-of-bounds write vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-01-13

Last Modified

2026-01-13

Generated

2026-07-06

AI Q&A

2026-01-14

EPSS Evaluated

2026-07-05

NVD

CVE-2026-21305

EUVD

EUVD-2026-2050

Affected Vendors & Products

Vendor	Product	Version / Range
adobe	substance3d_painter	to 11.0.3 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-787	The product writes data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

Executive Summary

This vulnerability is an out-of-bounds write in Substance3D Painter versions 11.0.3 and earlier. It can allow an attacker to execute arbitrary code with the privileges of the current user. Exploiting this vulnerability requires the victim to open a malicious file, meaning user interaction is necessary.

Impact Analysis

If exploited, this vulnerability could allow an attacker to run arbitrary code on your system with your user privileges. This could lead to unauthorized actions such as installing malware, stealing data, or damaging your system.

Mitigation Strategies

To mitigate this vulnerability, ensure that you do not open malicious files in Substance3D - Painter versions 11.0.3 and earlier. Updating to a version later than 11.0.3, if available, is recommended to fix the out-of-bounds write vulnerability. Additionally, exercise caution with files received from untrusted sources to prevent exploitation requiring user interaction.

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