Out-of-Bounds Write Vulnerability in Substance3D Designer by Adobe
CVE-2026-21307

7.8HIGH

Key Information:

Vendor

Adobe
Status
Substance3d - Designer
Vendor
CVE Published:
13 January 2026

What is CVE-2026-21307?

Substance3D Designer by Adobe is affected by an out-of-bounds write vulnerability present in versions 15.0.3 and earlier. This security flaw could allow an attacker to execute arbitrary code within the context of the current user if the user opens a maliciously crafted file. Successful exploitation necessitates user interaction, making it imperative for users to exercise caution when handling files from untrusted sources.

Affected Version(s)

Substance3D - Designer 0 <= 15.0.3

References

https://helpx.adobe.com/security/products/substance3d_des...
vendor-advisory

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.