CVE-1999-1132: Microsoft Windows Nt

Medium severity, CVSS 5.0. EPSS: 18.3% chance of exploitation in the next 30 days.

Windows NT 4.0 allows remote attackers to cause a denial of service (crash) via extra source routing data such as (1) a Routing Information Field (RIF) field with a hop count greater than 7, or (2) a list containing duplicate Token Ring IDs.

Affected products

• Microsoft Windows Nt: version 4.0 only

Published 1999-12-31. Last modified 2026-06-16.