CVE-2026-84854 WibuKey - Buffer Overflow

WibuKey driver for Windows < 6.72 contains a buffer overflow caused by insufficient validation of user input when calculating kernel buffer size, letting attackers cause system crash or modify adjacent kernel memory, exploit requires local access.

CVSS base score 7.0 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.09% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Buffer Overflow
Impact
Denial Of Service, Privilege Escalation
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
6 October 2026
Updated
15 October 2026
Weakness
CWE-787

Vendor fix

Update to version 6.72 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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