CVE-2018-3990: Wibu Wibukey

High severity, CVSS 7.8. EPSS: 0.6% chance of exploitation in the next 30 days.

An exploitable pool corruption vulnerability exists in the 0x8200E804 IOCTL handler functionality of WIBU-SYSTEMS WibuKey.sys Version 6.40 (Build 2400). A specially crafted IRP request can cause a buffer overflow, resulting in kernel memory corruption and, potentially, privilege escalation. An attacker can send an IRP request to trigger this vulnerability.

Affected products

• Wibu Wibukey: version 6.40 only

Published 2019-02-05. Last modified 2026-06-17.