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.
CVE-2002-0071
NONECVSS 0.0Elevated
0.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- No confirmed exploitation signals yet
CISA-KEV: Not listedEPSS: 26%CVSS: —Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- —
- EG Score
- 0.0(none)
- EPSS
- 97.7%
- KEV
- Not listed
Published
April 22, 2002
Last Modified
June 16, 2026
References (22)
- cve@mitrehttp://marc.info/?l=bugtraq&m=101854087828265&w=2
- cve@mitrehttp://www.atstake.com/research/advisories/2002/a041002-1.txt
- cve@mitrehttp://www.cert.org/advisories/CA-2002-09.html
- cve@mitrehttp://www.cisco.com/warp/public/707/Microsoft-IIS-vulnerabilities-MS02-018.shtml
- cve@mitrehttp://www.iss.net/security_center/static/8799.php
- cve@mitrehttp://www.kb.cert.org/vuls/id/363715
- cve@mitrehttp://www.osvdb.org/3325
- cve@mitrehttp://www.securityfocus.com/bid/4474
- cve@mitrehttps://docs.microsoft.com/en-us/security-updates/securitybulletins/2002/ms02-018
- cve@mitrehttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A130
- cve@mitrehttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A45
- af854a3a-2127-422b-91ae-364da2661108http://marc.info/?l=bugtraq&m=101854087828265&w=2
- af854a3a-2127-422b-91ae-364da2661108http://www.atstake.com/research/advisories/2002/a041002-1.txt
- af854a3a-2127-422b-91ae-364da2661108http://www.cert.org/advisories/CA-2002-09.html
- af854a3a-2127-422b-91ae-364da2661108http://www.cisco.com/warp/public/707/Microsoft-IIS-vulnerabilities-MS02-018.shtml
Data Freshness Timeline
(refreshed 3× in last 7d / 14× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-13 06:07 UTCEPSS rescore
- 2026-07-11 08:22 UTCEPSS rescore
- 2026-07-08 15:08 UTCEPSS rescore
- 2026-07-04 06:26 UTCEPSS rescore
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- 2026-06-27 03:04 UTCEPSS rescore
- 2026-06-24 14:01 UTCEPSS rescore
- 2026-06-23 21:29 UTCEPSS rescore
- 2026-06-21 01:56 UTCEPSS rescore
- 2026-06-18 17:49 UTCEPSS rescore
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- 2026-06-16 17:49 UTCEPSS rescore
- 2026-06-14 23:13 UTCEPSS rescore
- 2026-06-13 22:56 UTCEPSS rescore
- 2026-06-12 23:07 UTCEPSS rescore
- 2026-06-11 13:55 UTCEPSS rescore
- 2026-06-10 22:13 UTCEPSS rescore
- 2026-06-05 06:07 UTCEPSS rescore
- 2026-06-04 13:09 UTCEPSS rescore
- 2026-06-01 13:48 UTCEPSS rescore
- 2026-05-31 19:36 UTCEG score recompute
- 2026-05-31 19:36 UTCGHSA enrichment
- 2026-05-29 13:40 UTCEPSS rescore
- 2026-05-28 13:42 UTCEPSS rescore
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- 2026-05-28 13:42 UTCEPSS rescore
- 2026-05-28 13:42 UTCEPSS rescore
- 2026-05-28 13:42 UTCEPSS rescore
- 2026-05-27 13:37 UTCEPSS rescore
- 2026-05-27 13:37 UTCEPSS rescore
- 2026-05-26 13:41 UTCEPSS rescore
- 2026-05-26 13:41 UTCEPSS rescore
- 2026-05-26 13:41 UTCEPSS rescore
- 2026-05-26 07:16 UTCEPSS rescore
- 2026-05-26 07:16 UTCEPSS rescore
- 2026-05-24 16:42 UTCEPSS rescore
- 2026-05-22 21:15 UTCEPSS rescore
- 2026-05-21 22:38 UTCEPSS rescore
- 2026-05-20 22:36 UTCEPSS rescore
- 2026-05-18 21:29 UTCEPSS rescore
- 2026-05-18 21:29 UTCEPSS rescore
Frequently asked(4)
What is CVE-2002-0071?
CVE-2002-0071 is a none vulnerability published on April 22, 2002. 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.
When was CVE-2002-0071 disclosed?
CVE-2002-0071 was first published in the National Vulnerability Database on April 22, 2002, with the most recent update on June 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2002-0071 actively exploited?
CVE-2002-0071 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 97.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2002-0071?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2002-0071, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2002-0071
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