CVE-2026-81579: high-severity vulnerability in wibu-systems-ag wibukey
An untrusted Pointer Dereference can be exploited to escalate privileges by an unprivileged user on Windows
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.8epss 0.2%
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.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Affected products
wibu-systems-ag · wibukeyRelated CVEs — wibu-systems-ag wibukey
In the same product, most dangerous first.
CVE-2026-81581HIGHUser input in WibuKey is used (without proper sanitization) to compute the address of a pointer, which can be exploited to let the user point to any storage, to which Windows responds with a denial of service.EPSS 0.2%CVE-2026-84854HIGHOut of Bound Write on WibuKey for WindowsEPSS 0.1%