---
id: CVE-2026-21306
title: >-
  Substance3D - Sampler versions 5.1.0 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 - Sampler versions 5.1.0 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 …
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_sampler
affected:
  - substance_3d_sampler < 5.1.3
patched:
  - substance_3d_sampler 5.1.3
published: '2026-01-13'
updated: '2026-08-27'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-21306'
references:
  - url: >-
      https://helpx.adobe.com/security/products/substance3d-sampler/apsb26-11.html
    label: psirt@adobe.com
tags:
  - nvd
epss: 0.0019
epssPercentile: 0.07718
ingestedAt: '2026-08-27T21:08:14.872Z'
---

## Overview

Substance3D - Sampler versions 5.1.0 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_sampler < 5.1.3`

## Remediation

Upgrade past the affected range:

- `substance_3d_sampler 5.1.3`