Out-of-Bounds Write Vulnerability in Substance3D Stager by Adobe
CVE-2026-103839

7.8HIGH

Key Information:

Vendor

Adobe
Status
Adobe Substance 3d Stager
Vendor
CVE Published:
13 October 2026

What is CVE-2026-103839?

Substance3D Stager, developed by Adobe, is susceptible to an out-of-bounds write vulnerability. This flaw allows for arbitrary code execution within the context of the current user. Successful exploitation requires user interaction, specifically that the user opens a specially crafted malicious file. It is crucial for users of Substance3D Stager to remain vigilant and apply the necessary updates to mitigate potential risks.

Affected Version(s)

Adobe Substance 3D Stager 0 <= 3.1.8

Adobe Substance 3D Stager 3.1.9

References

https://www.adobe.com/trust/security/products/substance3d...
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

.