PT-2026-2779 · Adobe · Substance3D - Stager

Jann Horn · Published 2026-01-13 · Updated 2026-01-13 · CVE-2026-21287

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Substance3D - Stager versions 3.1.5 and earlier

Description A Use After Free issue exists in Substance3D - Stager. Successful exploitation could lead to arbitrary code execution with the privileges of the current user. User interaction is required, specifically opening a malicious file, for exploitation to occur.

Recommendations Update Substance3D - Stager to a version later than 3.1.5.

Fix

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

BDU:2026-00594

CVE-2026-21287

Affected Products

Substance3D - Stager

References · 5

• https://helpx.adobe.com/security/products/substance3d_stager/apsb26-09.html · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-21287 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-00594 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-21287 · Security Note
• https://twitter.com/CVEnew/status/2011181477279793200 · Twitter Post