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 attacke
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.
- Published
- Jul 21, 2001
- Updated
- Jun 16, 2026
- EPSS
- 96.7% · 100th percentile
- CWE
- —
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Report tools
Action score
69
This week
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- CVSS
- 40 / 40 · 10.0 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 29 / 30 · 96.7%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| microsoft | index server | cpe:2.3:a:microsoft:index_server |
| microsoft | indexing service | cpe:2.3:a:microsoft:indexing_service |
| microsoft | internet information server | cpe:2.3:a:microsoft:internet_information_server |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- microsoft index server2.0
- microsoft indexing serviceall versions
- microsoft internet information serverup to 6.0 inclusive
Same product
microsoft: all recordsOther highest-scoring records for the same primary product.
- CVE-2000-0302Microsoft Index Server allows remote attackers to view the source code of ASP files by appending a %20 to the filename in the CiWebHitsFile 44Plan
- CVE-2000-0098Microsoft Index Server allows remote attackers to determine the real path for a web directory via a request to an Internet Data Query file t35Monitor
- CVE-2001-0986SQLQHit.asp sample file in Microsoft Index Server 2.0 allows remote attackers to obtain sensitive information such as the physical path, fil34Monitor
- CVE-2001-0244Buffer overflow in Microsoft Index Server 2.0 allows remote attackers to execute arbitrary commands via a long search parameter.34Monitor
- CVE-1999-1397Index Server 2.0 on IIS 4.0 stores physical path information in the ContentIndex\Catalogs subkey of the AllowedPaths registry key, whose per34Monitor
- CVE-2000-0097The WebHits ISAPI filter in Microsoft Index Server allows remote attackers to read arbitrary files, aka the "Malformed Hit-Highlighting Argu31Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
Weaponized
A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.
Evidence
- Metasploit module ×1
- Exploit-DB entry ×5
Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.
| Source | Kind | Date |
|---|---|---|
| Exploit-DB entry | dos | 2001-06-18 |
| Exploit-DB entry | remote | 2010-06-15 |
| Exploit-DB entry | remote | 2001-06-21 |
| Exploit-DB entry | remote | 2001-06-18 |
| Exploit-DB entry | remote | 2001-06-18 |
| Metasploit module | exploit/windows/iis/ms01_033_idqMS01-033 Microsoft IIS 5.0 IDQ Path Overflowexploit | 2001-06-18 |
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
- First PoC-33 d
- Metasploit-33 d
- Published
- TodaySep 30, 2026+9202 d
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- C · data can be read
- Integrity
- C · data or configuration can be modified
- Availability
- C · the service can be disrupted
- Attack complexity
- Low
- Confidentiality impact
- C
- Integrity impact
- C
- Availability impact
- C
Weakness class (CWE)
—
CVSS vector
AV:N/AC:L/Au:N/C:C/I:C/A:C
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
- www.ciac.org/ciac/bulletins/l-098.shtml
- www.iss.net/security_center/static/6705.php
- www.securityfocus.com/archive/1/191873
- www.securityfocus.com/bid/2880
- docs.microsoft.com/en-us/security-updates/securitybulletins/2001/ms01-033
- oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A197
Vendor advisories and official records. Exploit/PoC links are deliberately left out.