Use After Free Vulnerability in Substance3D Stager by Adobe
CVE-2026-21287

7.8HIGH

Key Information:

Vendor

Adobe
Status
Substance3d - Stager
Vendor
CVE Published:
13 January 2026

What is CVE-2026-21287?

Substance3D Stager is at risk due to a Use After Free vulnerability present in versions 3.1.5 and earlier. This flaw allows for arbitrary code execution under the permissions of the current user, posing significant security risks if exploited. The successful exploitation requires user interaction, specifically that a victim must open a malicious file crafted to trigger this vulnerability.

Affected Version(s)

Substance3D - Stager 0 <= 3.1.5

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

.