---
id: CVE-2026-21344
title: >-
  Substance3D - Stager versions 3.1.6 and earlier are affected by an
  out-of-bounds read vulnerability when parsing a crafted file, which could
  result in a read past the end of an allocated memory structure
summary: >-
  Substance3D - Stager versions 3.1.6 and earlier are affected by an
  out-of-bounds read vulnerability when parsing a crafted file, which could
  result in a read past the end of an allocated memory structure. An attacker
  could leverage this …
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-125
vendor: adobe
product: substance_3d_stager
affected:
  - substance_3d_stager < 3.1.7
patched:
  - substance_3d_stager 3.1.7
published: '2026-02-10'
updated: '2026-08-27'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-21344'
references:
  - url: >-
      https://helpx.adobe.com/security/products/substance3d_stager/apsb26-20.html
    label: psirt@adobe.com
tags:
  - nvd
epss: 0.00165
epssPercentile: 0.05
ingestedAt: '2026-08-27T21:08:16.790Z'
---

## Overview

Substance3D - Stager versions 3.1.6 and earlier are affected by an out-of-bounds read vulnerability when parsing a crafted file, which could result in a read past the end of an allocated memory structure. An attacker could leverage this vulnerability to execute code 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_stager < 3.1.7`

## Remediation

Upgrade past the affected range:

- `substance_3d_stager 3.1.7`