CVE-2026-21343
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
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| adobe | substance_3d_stager | to 3.1.7 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-125 | The product reads data past the end, or before the beginning, of the intended buffer. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
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 means the program reads data beyond the allocated memory structure, which can lead to unexpected behavior.
An attacker could exploit this vulnerability by convincing a user to open a malicious file, which could then allow the attacker to execute code with the same privileges as the current user.
How can this vulnerability impact me? :
If exploited, this vulnerability can allow an attacker to execute arbitrary code on your system with the privileges of the user who opens the malicious file.
This could lead to unauthorized actions such as installing malware, stealing data, or disrupting normal operations.
However, exploitation requires user interaction, meaning the victim must open a crafted malicious file for the attack to succeed.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, avoid opening files from untrusted or unknown sources in Substance3D - Stager versions 3.1.6 and earlier.
Since exploitation requires user interaction by opening a malicious file, exercising caution with file handling is critical.
Additionally, update Substance3D - Stager to a version later than 3.1.6 once a patch is available to address this out-of-bounds read vulnerability.