CVE-2026-21345
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 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.
How can this vulnerability impact me? :
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.
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, 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.