CVE-2026-81579

HIGH CVSS 3.1: 8.8 EPSS 0.17%
Updated Sep 03, 2026
Wibu-Systems-Ag
Parameter Value
CVSS 8.8 (HIGH)
Affected Versions 0 — 6.71
Fixed In 6.71
Type CWE-123
Vendor Wibu-Systems-Ag
Public PoC No

In WibuKey for Windows before version 6.71, an untrusted pointer dereference in the WibuKey2_64.sys kernel driver for 64-bit Windows allows an attacker to exploit a write-what-where primitive, enabling local privilege escalation. This can be leveraged to execute arbitrary code, run an administrator shell, or gain full control over the system.

Attack Parameters

Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

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 1

Configuration From (including) Up to (excluding)
Wibu-Systems-Ag Wibukey
cpe:2.3:a:wibu-systems-ag:wibukey:*:*:*:*:*:*:*:*
0 6.71