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Vulnerability record · CVE-2002-0071 · published 22 April 2002

CVE-2002-0071: Microsoft internet information server vulnerability

Microsoft · Internet Information Server

Buffer overflow in the ism.dll ISAPI extension that implements HTR scripting in Internet Information Server (IIS) 4.0 and 5.0 allows attackers to cause a denial of service or execute arbitrary code via HTR requests with long variable names.

7.5 CVSS 2.0 High EPSS 34% · top 1.7%
7.5CVSS 2.0 base score
34%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
22References
16 Jun 2026Last modified by NVD

Description

Buffer overflow in the ism.dll ISAPI extension that implements HTR scripting in Internet Information Server (IIS) 4.0 and 5.0 allows attackers to cause a denial of service or execute arbitrary code via HTR requests with long variable names.

AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://marc.info/?l=bugtraq&m=101854087828265&w=2
http://www.atstake.com/research/advisories/2002/a041002-1.txt
http://www.cert.org/advisories/CA-2002-09.html US Government Resource
http://www.cisco.com/warp/public/707/Microsoft-IIS-vulnerabilities-MS02-018.shtml
http://www.iss.net/security_center/static/8799.php
http://www.kb.cert.org/vuls/id/363715 US Government Resource
http://www.osvdb.org/3325
http://www.securityfocus.com/bid/4474
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2002/ms02-018
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A130
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A45
http://marc.info/?l=bugtraq&m=101854087828265&w=2
http://www.atstake.com/research/advisories/2002/a041002-1.txt
http://www.cert.org/advisories/CA-2002-09.html US Government Resource
http://www.cisco.com/warp/public/707/Microsoft-IIS-vulnerabilities-MS02-018.shtml
http://www.iss.net/security_center/static/8799.php
http://www.kb.cert.org/vuls/id/363715 US Government Resource
http://www.osvdb.org/3325
http://www.securityfocus.com/bid/4474
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2002/ms02-018
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A130
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A45

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2002-0071), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.