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.
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Meta Information
Published
2026-01-13
Last Modified
2026-01-13
Generated
2026-06-16
AI Q&A
2026-01-14
EPSS Evaluated
2026-06-15
NVD
CVE-2026-21305
EUVD
EUVD-2026-2050
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
adobe substance3d_painter to 11.0.3 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-787 The product writes data past the end, or before the beginning, of the intended buffer.
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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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