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CVE-2026-21345

HIGH CVSS 3.1: 7.8 EPSS 0.03%
Updated Feb 11, 2026
Apple
Parameter Value
CVSS 7.8 (HIGH)
Affected Versions before 3.1.7
Fixed In 3.1.7
Type CWE-125 (Out-of-bounds Read)
Vendor Apple
Public PoC No

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.

Attack Parameters

Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
Required
User action required

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Weakness Type (CWE)

Vulnerable Products 3

Configuration From (including) Up to (excluding)
Adobe Substance_3d_Stager
cpe:2.3:a:adobe:substance_3d_stager:*:*:*:*:*:*:*:*
3.1.7
Apple Macos
cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*
Microsoft Windows
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*