CVE-2001-0546

NONECVSS 0.0Elevated

0.0

Memory leak in H.323 Gatekeeper Service in Microsoft Internet Security and Acceleration (ISA) Server 2000 allows remote attackers to cause a denial of service (resource exhaustion) via a large amount of malformed H.323 data.

CVSS v3: —
EG Score: —
EPSS: 95.4%
KEV: Not listed

Published

September 20, 2001

Last Modified

April 16, 2026

References (6)

cve@mitrehttp://www.securityfocus.com/bid/3196
cve@mitrehttps://docs.microsoft.com/en-us/security-updates/securitybulletins/2001/ms01-045
cve@mitrehttps://exchange.xforce.ibmcloud.com/vulnerabilities/6989
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/3196
af854a3a-2127-422b-91ae-364da2661108https://docs.microsoft.com/en-us/security-updates/securitybulletins/2001/ms01-045
af854a3a-2127-422b-91ae-364da2661108https://exchange.xforce.ibmcloud.com/vulnerabilities/6989

Data Freshness Timeline

(refreshed 13× 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(4)

What is CVE-2001-0546?

CVE-2001-0546 is a none vulnerability published on September 20, 2001. Memory leak in H.323 Gatekeeper Service in Microsoft Internet Security and Acceleration (ISA) Server 2000 allows remote attackers to cause a denial of service (resource exhaustion) via a large amount of malformed H.323 data.

When was CVE-2001-0546 disclosed?

CVE-2001-0546 was first published in the National Vulnerability Database on September 20, 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-2001-0546 actively exploited?

CVE-2001-0546 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 95.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-2001-0546?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2001-0546, 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-2001-0546

📅 Published

🔄 Last Modified

🔗 References (6)