Out-of-Bounds Read Vulnerability in Substance3D - Stager by Adobe
CVE-2026-21344

7.8HIGH

Key Information:

Vendor

Adobe
Status
Substance3d - Stager
Vendor
CVE Published:
10 February 2026

What is CVE-2026-21344?

Substance3D - Stager versions 3.1.6 and earlier contain a vulnerability that arises from improper input validation when parsing specially crafted files. This vulnerability allows an attacker to read data beyond the allocated memory structure, potentially leading to memory corruption or unauthorized code execution in the context of the user. User interaction is necessary for exploitation, as the victim must open the maliciously crafted file to trigger the vulnerability.

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Affected Version(s)

Substance3D - Stager 0 <= 3.1.6

References

https://helpx.adobe.com/security/products/substance3d_sta...
vendor-advisory

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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