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CVE-2000-0246

IIS 4.0 and 5.0 does not properly perform ISAPI extension processing if a virtual directory is mapped to a UNC share, which allows remote attackers to read the source code of ASP and other files, aka the "Virtualized UNC Share" vulnerability.

Published: Mar 30, 2000 Modified: Apr 16, 2026

CVSS Metrics

Affected Products (7)

Vendor Product Version
microsoft commercial_internet_system 2.0
microsoft commercial_internet_system 2.5
microsoft internet_information_server 4.0
microsoft internet_information_services 5.0
microsoft proxy_server 2.0
microsoft site_server 3.0
microsoft site_server_commerce 3.0

GitHub Security Advisory GHSA-2h2p-h37h-5phg

IIS 4.0 and 5.0 does not properly perform ISAPI extension processing if a virtual directory is...

Risk Scores

CVSS Score 5.0 / 10
EPSS Score 83.62%

Top 1% most likely to be exploited

Threat Score 55.1 / 100

Data Sources

NVD EPSS GitHub