CVE-2000-0024: Microsoft Internet Information Server

Medium severity, CVSS 6.4. EPSS: 12.2% chance of exploitation in the next 30 days.

IIS does not properly canonicalize URLs, potentially allowing remote attackers to bypass access restrictions in third-party software via escape characters, aka the "Escape Character Parsing" vulnerability.

Affected products

• Microsoft Internet Information Server: version 4.0 only
• Microsoft Site Server: version 3.0 only
• Microsoft Site Server Commerce: version 3.0 only

Published 1999-12-21. Last modified 2026-06-16.