CVE-2026-21287
Unknown Unknown - Not Provided
Use After Free in Substance3D Stager Allows Code Execution

Publication date: 2026-01-13

Last updated on: 2026-01-13

Assigner: Adobe Systems Incorporated

Description
Substance3D - Stager versions 3.1.5 and earlier are affected by a Use After Free 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-2026-21287
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
adobe substance3d_stager to 3.1.5 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-416 The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
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Executive Summary

This vulnerability is a Use After Free issue in Substance3D - Stager versions 3.1.5 and earlier. It occurs when the software improperly handles memory, allowing an attacker to execute arbitrary code within the context of the current user. Exploiting this vulnerability requires the victim to open a malicious file.

Impact Analysis

If exploited, this vulnerability can allow an attacker to execute arbitrary code on your system with the privileges of the current user. This could lead to unauthorized actions such as data theft, installation of malware, or other malicious activities. However, exploitation requires user interaction by opening a malicious file.

Mitigation Strategies

To mitigate this vulnerability, avoid opening malicious files that could exploit the Use After Free vulnerability in Substance3D - Stager versions 3.1.5 and earlier. Consider updating to a version later than 3.1.5 if available, and ensure users are aware not to open untrusted files.

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