CVE-2026-21307
Unknown Unknown - Not Provided
Out-of-Bounds Write in Substance3D Designer Enables Code Execution

Publication date: 2026-01-13

Last updated on: 2026-01-13

Assigner: Adobe Systems Incorporated

Description
Substance3D - Designer versions 15.0.3 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
2026-06-17
AI Q&A
2026-01-14
EPSS Evaluated
2026-06-16
NVD
CVE-2026-21307
EUVD
EUVD-2026-2031
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
adobe substance3d_designer to 15.0.3 (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 - Designer versions 15.0.3 and earlier. It can allow an attacker to execute arbitrary code with the privileges of the current user if the user opens a specially crafted malicious file.

Impact Analysis

If exploited, this vulnerability can lead to arbitrary code execution, which means an attacker could run malicious code on your system with your user privileges. This could result in data loss, system compromise, or other malicious activities.

Mitigation Strategies

To mitigate this vulnerability, ensure that you do not open malicious files in Substance3D - Designer versions 15.0.3 and earlier. Update Substance3D - Designer to a version later than 15.0.3 once available. Additionally, educate users to avoid opening untrusted files and consider applying principle of least privilege to limit the impact of potential exploitation.

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