Use After Free in Adobe Substance 3d Stager
CVE-2026-21287
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.
Vulnerability class: Use-After-Free
EPSS: 0.002 (7.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
Weakness classification (CWE)
References
- psirt@adobe.com (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-21287?
- CVE-2026-21287 is a high-severity vulnerability in Adobe Substance 3d Stager, classified under Use After Free. CVSS score: 7.8/10. Published 2026-01-13.
- How severe is CVE-2026-21287?
- High severity. CVSS v3 base score is 7.8 out of 10.