CVE-2026-81579 An untrusted Pointer Dereference can be exploited to escalate privileges by an unprivileged user on Windows
An untrusted pointer dereference in the WibuKey Windows kernel driver allows local attackers to escalate privileges and execute arbitrary code.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-81579?
CVE-2026-81579 is a high-severity vulnerability in wibu-systems-ag wibukey, published on 27 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-123
Which versions are affected by CVE-2026-81579?
How do I fix CVE-2026-81579?
No fix has been published for CVE-2026-81579 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-81579 being exploited?
There is no known exploitation of CVE-2026-81579 in the wild and no public exploit code.
Sources
Also known as GHSA-gqq4-6ppr-52p5.