Which products and versions are affected by CVE-2000-0246?

Affected: Commercial Internet System (Microsoft) versions 2.0, 2.5; Internet Information Server (Microsoft) versions 4.0; Internet Information Services (Microsoft) versions 5.0, among others. The full list is in the CVE brief.

Is CVE-2000-0246 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2000-0246 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2000-0246?

Public exploit code is available.

Is there a fix for CVE-2000-0246?

No fixed version is listed yet; check the vendor advisory for mitigations.

How urgently should CVE-2000-0246 be patched?

Brandefense priority: patch immediately, because it is very likely to be exploited soon.

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Vulnerability Intelligence

CVE-2000-0246

MediumPublic exploit

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 · Updated Apr 15, 2026

Key Facts

Patch immediately

CVE-2000-0246 is a medium-severity vulnerability (CVSS 5.0 v2) affecting Commercial Internet System (Microsoft), Internet Information Server (Microsoft), Internet Information Services (Microsoft) and 3 more products.
It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
EPSS estimates a 80% probability of exploitation in the next 30 days.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

CVSS v2

5.0

AV:N/AC:L/Au:N/C:P/I:N/A:N

EPSS (30-day exploit likelihood)

80%

Higher than 99.6% of all scored CVEs

Exploited in the wild

No known

Not in a known-exploited catalog

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2000-0246 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

Affected Products

7 affected entries in total

Product	Affected versions	Fixed in
Commercial Internet SystemMicrosoft	2.0, 2.5	n/a
Internet Information ServerMicrosoft	4.0	n/a
Internet Information ServicesMicrosoft	5.0	n/a
Proxy ServerMicrosoft	2.0	n/a
Site ServerMicrosoft	3.0	n/a

1 more affected products in the full CVE brief

Timeline

Publicly disclosed
Mar 30, 2000
Last updated
Apr 15, 2026

References

exploitExploitDB-19824
otherMS00-019
otherQ249599
other1081

FAQ

Common Questions.

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.
Affected: Commercial Internet System (Microsoft) versions 2.0, 2.5; Internet Information Server (Microsoft) versions 4.0; Internet Information Services (Microsoft) versions 5.0, among others. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

Is CVE-2000-0246 Running On Your Attack Surface?

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