CVE-1999-0777: Microsoft Commercial Internet System

High severity, CVSS 7.5. EPSS: 12% chance of exploitation in the next 30 days.

IIS FTP servers may allow a remote attacker to read or delete files on the server, even if they have "No Access" permissions.

Affected products

• Microsoft Commercial Internet System: version 2.5 only
• Microsoft Internet Information Server: version 4.0 only

Published 1999-09-23. Last modified 2026-06-16.