CVE-2026-21344 HIGH

CVE-2026-21344: Substance3D - Stager | Out-of-bounds Read (CWE-125)

Vendor Adobe
Product Substance3D - Stager
Weakness CWE-125
Published February 10, 2026
Last update February 26, 2026

CVSS base score

7.8/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

February 10, 2026 CVE published
February 26, 2026 Record updated