Out-of-Bounds Write Vulnerability in Substance3D Stager by Adobe
CVE-2026-21342

7.8HIGH

Key Information:

Vendor

Adobe
Status
Substance3d - Stager
Vendor
CVE Published:
10 February 2026

What is CVE-2026-21342?

Substance3D Stager versions 3.1.6 and earlier are susceptible to an out-of-bounds write vulnerability that may enable arbitrary code execution within the context of the current user. Successful exploitation necessitates user interaction, as it requires the victim to open a specifically crafted malicious file. Users of affected versions should exercise caution and apply the necessary updates to mitigate potential threats.

Affected Version(s)

Substance3D - Stager 0 <= 3.1.6

References

https://helpx.adobe.com/security/products/substance3d_sta...
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

.