CVE-2001-0334

HIGHNVD 7.5Elevated

7.5

FTP service in IIS 5.0 and earlier allows remote attackers to cause a denial of service via a wildcard sequence that generates a long string when it is expanded.

CVSS v3: 7.5
EG Score: —
EPSS: 96.8%
KEV: Not listed

Published

June 27, 2001

Last Modified

April 16, 2026

References (4)

cve@mitrehttps://docs.microsoft.com/en-us/security-updates/securitybulletins/2001/ms01-026
cve@mitrehttps://exchange.xforce.ibmcloud.com/vulnerabilities/6535
af854a3a-2127-422b-91ae-364da2661108https://docs.microsoft.com/en-us/security-updates/securitybulletins/2001/ms01-026
af854a3a-2127-422b-91ae-364da2661108https://exchange.xforce.ibmcloud.com/vulnerabilities/6535

Data Freshness Timeline

(refreshed 12× in last 7d / 18× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-29 13:40 UTCepss_batch
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Frequently asked(5)

What is CVE-2001-0334?

CVE-2001-0334 is a high vulnerability published on June 27, 2001. FTP service in IIS 5.0 and earlier allows remote attackers to cause a denial of service via a wildcard sequence that generates a long string when it is expanded.

When was CVE-2001-0334 disclosed?

CVE-2001-0334 was first published in the National Vulnerability Database on June 27, 2001, with the most recent update on April 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2001-0334 actively exploited?

CVE-2001-0334 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 96.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2001-0334?

CVE-2001-0334 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-2001-0334?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2001-0334, 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.

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CVE-2001-0334

📅 Published

🔄 Last Modified

🔗 References (4)