CVE-2026-21307: Substance3D - Designer | Out-of-bounds Write (CWE-787)
Published Jan 13, 2026
·Updated
Substance3D - Designer versions 15.0.3 and earlier are affected by an out-of-bounds write 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.
Affected Software
2 affected components
Substance3D Designer<15.0.3
Adobe Substance 3D Designer<15.1.0
Event History
Jan 13, 2026
CVE Published
via MITRE·08:07 PM
Data Sourced
via MITRE·08:07 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·08:16 PM
DescriptionSeverityWeaknessAffected Software
Jan 6, 58022
Event
via FIRST·12:14 AM
Frequently Asked Questions
1
What is the severity of CVE-2026-21307?
CVE-2026-21307 is considered a critical vulnerability due to its potential for arbitrary code execution.
2
How do I fix CVE-2026-21307?
To fix CVE-2026-21307, users should update Substance3D Designer to version 15.0.4 or later.
3
What type of vulnerability is CVE-2026-21307?
CVE-2026-21307 is an out-of-bounds write vulnerability, classified under CWE-787.
4
What could happen if CVE-2026-21307 is exploited?
Exploitation of CVE-2026-21307 could lead to arbitrary code execution in the context of the current user.
5
Does CVE-2026-21307 require user interaction for exploitation?
Yes, exploitation of CVE-2026-21307 requires user interaction.