CVE-2026-108399

HIGH CVSS 3.1: 7.2 EPSS 0.39%
Updated Oct 16, 2026
Heap-based
Parameter Value
CVSS 7.2 (HIGH)
Type CWE-122 (Heap-based Buffer Overflow)
Vendor Heap-based
Public PoC No

Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to elevate privileges locally.

Attack Parameters

Attack Vector
Local
Requires local access
Attack Complexity
High
Difficult to exploit
Privileges Required
High
Admin 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