CVE-1999-0344: Microsoft Windows Nt

High severity, CVSS 7.2. EPSS: 1.4% chance of exploitation in the next 30 days.

NT users can gain debug-level access on a system process using the Sechole exploit.

Affected products

• Microsoft Windows Nt: version 3.5.1 only; version 4.0 only

Published 1998-08-01. Last modified 2026-06-16.