CVE-2026-21343

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.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://helpx.adobe.com/security/products/substance3d_stager/apsb26-20.html	Vendor Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:a:adobe:substance_3d_stager:*:*:*:*:*:*:*:*

OR	cpe:2.3:o:apple:macos:-:::::::*
	cpe:2.3:o:microsoft:windows:-:::::::*

History

17 Jun 2026, 10:18

Type	Values Removed	Values Added
Summary		(es) Versiones 3.1.6 y anteriores de Substance3D - Stager están afectadas por una vulnerabilidad de lectura fuera de límites al analizar un archivo manipulado, lo que podría resultar en una lectura más allá del final de una estructura de memoria asignada. Un atacante podría aprovechar esta vulnerabilidad para ejecutar código en el contexto del usuario actual. La explotación de este problema requiere interacción del usuario en el sentido de que una víctima debe abrir un archivo malicioso.

11 Feb 2026, 17:16

Type	Values Removed	Values Added
References	~~() https://helpx.adobe.com/security/products/substance3d_stager/apsb26-20.html -~~	() https://helpx.adobe.com/security/products/substance3d_stager/apsb26-20.html - Vendor Advisory
CPE		cpe:2.3:a:adobe:substance_3d_stager:::::::: cpe:2.3:o:microsoft:windows:-:::::::* cpe:2.3:o:apple:macos:-:::::::*
First Time		Adobe Microsoft Microsoft windows Adobe substance 3d Stager Apple macos Apple

10 Feb 2026, 19:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-02-10 19:15

Updated : 2026-06-17 10:18

NVD link : CVE-2026-21343

Mitre link : CVE-2026-21343

CVE.ORG link : CVE-2026-21343

JSON object : View

Products Affected

adobe

substance_3d_stager

microsoft

windows

apple

macos

CWE

CWE-125

Out-of-bounds Read

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