CVE & CISA-KEV CatalogNVD
CVE-2001-0546
MEDIUMEPSS 96th pctl5.0
CVSS v2
Description
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 v2 Vector
No CVSS vector data available.
Exploit Intelligence
14.24%probability of exploitation in 30 days
96thpercentile
Very high risk: more likely to be exploited than 96% of all known CVEs.
References
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Start freeThis product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-16.