CVE-1999-1234: Microsoft Windows Nt

Medium severity, CVSS 5.0. EPSS: 13.5% chance of exploitation in the next 30 days.

LSA (LSASS.EXE) in Windows NT 4.0 allows remote attackers to cause a denial of service via a NULL policy handle in a call to (1) SamrOpenDomain, (2) SamrEnumDomainUsers, and (3) SamrQueryDomainInfo.

Affected products

• Microsoft Windows Nt: version 4.0 only

Published 1999-10-26. Last modified 2026-06-16.