CVE-2026-84854

HIGH CVSS 3.1: 7.0 EPSS 0.09%
Updated Oct 15, 2026
Wibu-Systems-Ag
Parameter Value
CVSS 7.0 (HIGH)
Affected Versions 0 — 6.72
Fixed In 6.72
Type CWE-787 (Out-of-bounds Write)
Vendor Wibu-Systems-Ag
Public PoC No

In the WibuKey driver for Windows below Version 6.72, insufficient validation of user input when calculating the size of a kernel buffer could cause small amounts of data to be written outside the intended kernel buffer. This can lead to a system crash. Under unfavorable circumstances, adjacent kernel memory may be modified.

Attack Parameters

Attack Vector
Local
Requires local access
Attack Complexity
High
Difficult 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 6.72