CVE-2000-0258
IIS 4.0 and 5.0 allows remote attackers to cause a denial of service by sending many URLs with a large number of escaped characters, aka the "Myriad Escaped Characters" Vulnerability.
Date published : 2000-06-02
http://www.securityfocus.com/bid/1101
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2000/ms00-023