---
title: "CVE-2001-0500: Buffer overflow in ISAPI extension… | CubePath"
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…"
language: en
source: https://cubepath.com/security/cve/CVE-2001-0500
---

# CVE-2001-0500: Buffer overflow in ISAPI extension… | CubePath

## 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.

Official description from the CVE record, published by mitre. Copyright © 1999-2026 The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2001-0500)

## Key data

### EPSS

Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.

Score

0.96731 (96.7% probability)

Percentile

99.9%

Scores of

Nov 10, 2026

Model

v2026.06.15

## References

Links listed in the CVE record. They lead to other sites, which CubePath does not control.

- [MS01-033](https://docs.microsoft.com/en-us/security-updates/securitybulletins/2001/ms01-033)  (docs.microsoft.com) vendor-advisory
- [20010618 All versions of Microsoft Internet Information Services, Remote buffer overflow (SYSTEM Level Access)](http://www.securityfocus.com/archive/1/191873)  (securityfocus.com) mailing-list
- [2880](http://www.securityfocus.com/bid/2880)  (securityfocus.com) vdb-entry
- [L-098](http://www.ciac.org/ciac/bulletins/l-098.shtml)  (ciac.org) third-party-advisory government-resource
- [iis-isapi-idq-bo(6705)](http://www.iss.net/security%5Fcenter/static/6705.php)  (iss.net) vdb-entry
- [oval:org.mitre.oval:def:197](https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A197)  (oval.cisecurity.org) vdb-entry signature
- [CA-2001-13](http://www.cert.org/advisories/CA-2001-13.html)  (cert.org) third-party-advisory

## Timeline

1. ID reserved Jun 8, 2001
2. Record published Mar 9, 2002
3. Record last updated Aug 8, 2024

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## About CubePath

CubePath is a cloud provider with data centers in Europe and the United States. It offers VPS, bare metal servers and DDoS protection.

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Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 20:00 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)