CVE-2026-21305: Substance3D - Painter | Out-of-bounds Write (CWE-787)
Published Jan 13, 2026
·Updated
Substance3D - Painter versions 11.0.3 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 Painter<=11.0.3
Adobe Substance 3D Painter<11.1.2
Event History
Jan 13, 2026
CVE Published
via MITRE·07:33 PM
Data Sourced
via MITRE·07:33 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·08:16 PM
DescriptionSeverityWeaknessAffected Software
Jan 6, 58022
Event
via FIRST·06:57 AM
Frequently Asked Questions
1
What is the severity of CVE-2026-21305?
CVE-2026-21305 has a high severity rating due to its potential for arbitrary code execution.
2
How do I fix CVE-2026-21305?
To fix CVE-2026-21305, update Substance3D Painter to version 11.0.4 or later.
3
What versions of Substance3D Painter are affected by CVE-2026-21305?
Substance3D Painter versions 11.0.3 and earlier are affected by CVE-2026-21305.
4
What could happen if CVE-2026-21305 is exploited?
If exploited, CVE-2026-21305 could allow attackers to execute arbitrary code in the context of the current user.
5
Does exploitation of CVE-2026-21305 require user interaction?
Yes, exploitation of CVE-2026-21305 requires user interaction.