What’s Vulnerable › Vulnerabilities

CVE-2001-0500

• Severity: critical (CVSS 10.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 96.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2002-03-09 · updated 2026-06-16

Description

Buffer overflow in ISAPI extension (idq.dll) in Index Server 2.0 and Indexing Service 2000 in IIS 6.0 beta and earlier allows remote attackers to execute arbitrary commands via a long argument to Internet Data Administration (.ida) and Internet Data Query (.idq) files such as default.ida, as commonly exploited by Code Red.

Affected products

• Microsoft Index Server: 2.0
• Microsoft Indexing Service: all versions
• Microsoft Internet Information Server: through 6.0

References

• http://www.cert.org/advisories/CA-2001-13.html
• http://www.ciac.org/ciac/bulletins/l-098.shtml
• http://www.iss.net/security_center/static/6705.php
• http://www.securityfocus.com/archive/1/191873
• http://www.securityfocus.com/bid/2880
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2001/ms01-033
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A197
• http://www.cert.org/advisories/CA-2001-13.html
• http://www.ciac.org/ciac/bulletins/l-098.shtml
• http://www.iss.net/security_center/static/6705.php
• http://www.securityfocus.com/archive/1/191873
• http://www.securityfocus.com/bid/2880

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