CVE-2026-84854CWE-787

CVE-2026-84854

High · published October 6, 2026

CVSS v3.1
7.0
EPSS
0%
Percentile
0.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.0 · HIGH
Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00101 · 0.9th percentile
Weakness
CWE-787 · Out-of-bounds Write
Published
2026-10-06T14:16Z
References (2)
EPSS history
Timeline
  • 08 OCT 03:33Z
    EPSS moved — → 0%
    epss
  • 06 OCT 09:59Z
    Out of Bound Write on WibuKey for Windows
    cvelistv5