CVE-1999-1223: Microsoft Internet Information Server

Medium severity, CVSS 5.0. EPSS: 23.1% chance of exploitation in the next 30 days.

IIS 3.0 allows remote attackers to cause a denial of service via a request to an ASP page in which the URL contains a large number of / (forward slash) characters.

Affected products

• Microsoft Internet Information Server: version 3.0 only

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