CVE-1999-1537: Microsoft Internet Information Server

Medium severity, CVSS 5.0. EPSS: 8.5% chance of exploitation in the next 30 days.

IIS 3.x and 4.x does not distinguish between pages requiring encryption and those that do not, which allows remote attackers to cause a denial of service (resource exhaustion) via SSL requests to the HTTPS port for normally unencrypted files, which will cause IIS to perform extra work to send the files over SSL.

Affected products

• Microsoft Internet Information Server: version 3.0 only; version 4.0 only

Published 1999-07-07. Last modified 2026-06-16.