A Windows NT user can disable the keyboard or mouse by directly calling the IOCTLs which control them.
https://docs.microsoft.com/en-us/security-updates/securitybulletins/1999/ms99-024
http://support.microsoft.com/default.aspx?scid=kb%3B%5BLN%5D%3BQ236359
Source: Mitre, NVD
Published: 1999-07-06
Updated: 2026-06-16
Base Score: 7.8
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C
Severity: High
Base Score: 9.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity: Critical
EPSS: 0.0582