CVE-2026-21307

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.

• https://helpx.adobe.com/security/products/substance3d_designer/apsb26-13.html
  Vendor Advisory