CVE-2026-81579
High
Description
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.
SeverityHigh
CVSS8.8
Exploit probability6. percentile0.2%
ProductWibu-systems-ag Wibukey
PublishedAug 27, 2026
First seenAug 27, 2026
Weakness typeCWE-123CWE-123
How to fix
Update
- wibu-systems-ag wibukey6.71 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| wibu-systems-ag wibukey | v < 6.71 | 6.71 |
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