CVE-1999-1455: Microsoft Windows Nt

High severity, CVSS 7.5. EPSS: 3.9% chance of exploitation in the next 30 days.

RSH service utility RSHSVC in Windows NT 3.5 through 4.0 does not properly restrict access as specified in the .Rhosts file when a user comes from an authorized host, which could allow unauthorized users to access the service by logging in from an authorized host.

Affected products

• Microsoft Windows Nt: up to and including 4.0

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