CVE-2026-21287 HIGH

CVE-2026-21287: Substance3D - Stager | Use After Free (CWE-416)

Vendor Adobe
Product Substance3D - Stager
Weakness CWE-416
Published January 13, 2026
Last update February 26, 2026

CVSS base score

7.8/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

Substance3D - Stager versions 3.1.5 and earlier are affected by a Use After Free vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

Key dates

02Disclosure timeline

January 13, 2026 CVE published
February 26, 2026 Record updated