CVE-2026-21345
Analyzed Analyzed - Analysis Complete
Out-of-Bounds Read in Substance3D Stager Enables Code Execution

Publication date: 2026-02-10

Last updated on: 2026-02-11

Assigner: Adobe Systems Incorporated

Description
Substance3D - Stager versions 3.1.6 and earlier are affected by an out-of-bounds read vulnerability when parsing a crafted file, which could result in a read past the end of an allocated memory structure. An attacker could leverage this vulnerability to execute code 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
2026-02-10
Last Modified
2026-02-11
Generated
2026-06-16
AI Q&A
2026-02-10
EPSS Evaluated
2026-06-14
NVD
CVE-2026-21345
EUVD
EUVD-2026-6365
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
adobe substance_3d_stager to 3.1.7 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-125 The product reads data past the end, or before the beginning, of the intended buffer.
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Executive Summary

This vulnerability affects Substance3D - Stager versions 3.1.6 and earlier. It is an out-of-bounds read issue that occurs when the software parses a specially crafted file. This flaw can cause the program to read beyond the end of an allocated memory structure.

An attacker could exploit this vulnerability by tricking a user into opening a malicious file, which could then allow the attacker to execute code with the same privileges as the current user.

Impact Analysis

If exploited, this vulnerability can lead to arbitrary code execution in the context of the current user. This means an attacker could potentially run malicious code on your system, leading to unauthorized actions such as data theft, system compromise, or further malware installation.

However, exploitation requires user interaction, specifically that the victim opens a maliciously crafted file.

Compliance Impact

I don't know

Detection Guidance

I don't know

Mitigation Strategies

To mitigate this vulnerability, avoid opening files from untrusted or unknown sources in Substance3D - Stager versions 3.1.6 and earlier, as exploitation requires user interaction by opening a crafted malicious file.

Additionally, update Substance3D - Stager to a version later than 3.1.6 once a patch is available from Adobe to address this out-of-bounds read vulnerability.

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