---
id: CVE-2026-21307
title: >-
  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
summary: >-
  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 interactio…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'
cwe:
  - CWE-787
vendor: adobe
product: substance_3d_designer
affected:
  - substance_3d_designer < 15.1.0
patched:
  - substance_3d_designer 15.1.0
published: '2026-01-13'
updated: '2026-08-27'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-21307'
references:
  - url: >-
      https://helpx.adobe.com/security/products/substance3d_designer/apsb26-13.html
    label: psirt@adobe.com
tags:
  - nvd
epss: 0.00176
epssPercentile: 0.06417
ingestedAt: '2026-08-27T21:08:14.910Z'
---

## Overview

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.

## Affected

- `substance_3d_designer < 15.1.0`

## Remediation

Upgrade past the affected range:

- `substance_3d_designer 15.1.0`