CVE-2026-84854
High
Description
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.
SeverityHigh
CVSS7.0
Exploit probability—
ProductWibu-systems-ag Wibukey
PublishedOct 6, 2026
First seenOct 6, 2026
Weakness typeCWE-787Out-of-bounds write
How to fix
Update
- wibu-systems-ag wibukey6.72 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| wibu-systems-ag wibukey | v < 6.72 | 6.72 |
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