CVE-2001-0239

NONECVSS 0.0Weaponized

0.0

Microsoft Internet Security and Acceleration (ISA) Server 2000 Web Proxy allows remote attackers to cause a denial of service via a long web request with a specific type.

CVSS v3: —
EG Score: —
EPSS: 95.7%
KEV: Not listed

Published

July 2, 2001

Last Modified

April 16, 2026

References (14)

cve@mitrehttp://www.ciac.org/ciac/bulletins/l-073.shtml
cve@mitrehttp://www.securityfocus.com/archive/1/176912
cve@mitrehttp://www.securityfocus.com/archive/1/177160
cve@mitrehttp://www.securityfocus.com/archive/1/179986
cve@mitrehttp://www.securityfocus.com/bid/2600
cve@mitrehttps://docs.microsoft.com/en-us/security-updates/securitybulletins/2001/ms01-021
cve@mitrehttps://exchange.xforce.ibmcloud.com/vulnerabilities/6383
af854a3a-2127-422b-91ae-364da2661108http://www.ciac.org/ciac/bulletins/l-073.shtml
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/archive/1/176912
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/archive/1/177160
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/archive/1/179986
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/2600
af854a3a-2127-422b-91ae-364da2661108https://docs.microsoft.com/en-us/security-updates/securitybulletins/2001/ms01-021
af854a3a-2127-422b-91ae-364da2661108https://exchange.xforce.ibmcloud.com/vulnerabilities/6383

Data Freshness Timeline

(refreshed 11× in last 7d / 16× 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
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-27 13:37 UTCepss_batch
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2026-05-26 07:16 UTCepss_batch
2026-05-26 07:16 UTCepss_batch
2026-05-24 16:42 UTCepss_batch
2026-05-22 21:15 UTCepss_batch
2026-05-20 22:36 UTCepss_batch
2026-05-20 11:20 UTCepss_batch
2026-05-20 11:20 UTCepss_batch
2026-05-18 21:29 UTCepss_batch
2026-05-18 21:29 UTCepss_batch

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

Exploit-DBEDB-20763✓ verified
First seen Apr 16, 2001
Microsoft ISA Server 2000 Web Proxy - Denial of Service
Open source ↗

Frequently asked(4)

What is CVE-2001-0239?

CVE-2001-0239 is a none vulnerability published on July 2, 2001. Microsoft Internet Security and Acceleration (ISA) Server 2000 Web Proxy allows remote attackers to cause a denial of service via a long web request with a specific type.

When was CVE-2001-0239 disclosed?

CVE-2001-0239 was first published in the National Vulnerability Database on July 2, 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-2001-0239 actively exploited?

CVE-2001-0239 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 95.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-2001-0239?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2001-0239, 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-2001-0239

📅 Published

🔄 Last Modified

🔗 References (14)