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Vulnerability record · CVE-2000-0053 · published 4 January 2000

CVE-2000-0053: Microsoft commercial internet system vulnerability

Microsoft · Commercial Internet System

Microsoft Commercial Internet System (MCIS) IMAP server allows remote attackers to cause a denial of service via a malformed IMAP request.

7.5 CVSS 2.0 High EPSS 15% · top 3.4%
7.5CVSS 2.0 base score
15%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
16 Jun 2026Last modified by NVD

Description

Microsoft Commercial Internet System (MCIS) IMAP server allows remote attackers to cause a denial of service via a malformed IMAP request.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://support.microsoft.com/default.aspx?scid=kb%3B%5BLN%5D%3BQ246731
http://www.securityfocus.com/bid/912
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2000/ms00-001
http://support.microsoft.com/default.aspx?scid=kb%3B%5BLN%5D%3BQ246731
http://www.securityfocus.com/bid/912
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2000/ms00-001

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.5CVE-1999-0777Microsoft commercial internet system permissions and access controls vulnerabilityIIS FTP servers may allow a remote attacker to read or delete files on the server, even if they have "No Access" permissions.EPSS 12%5.0CVE-2000-0246IIS ISAPI processing on UNC-mapped virtual directories exposes source codeIIS 4.0 and 5.0 fails to properly perform ISAPI extension processing when a virtual directory is mapped to a UNC share. This causes ASP and other sou…EPSS 80%analysed5.0CVE-1999-0910Microsoft commercial internet system vulnerabilityMicrosoft Site Server and Commercial Internet System (MCIS) do not set an expiration for a cookie, which could then be cached by a proxy and inadvert…EPSS 5.8%5.0CVE-1999-0867Microsoft commercial internet system improper input validation vulnerabilityDenial of service in IIS 4.0 via a flood of HTTP requests with malformed headers.EPSS 22%2.6CVE-1999-0861Microsoft commercial internet system race condition vulnerabilityRace condition in the SSL ISAPI filter in IIS and other servers may leak information in plaintext.EPSS 3.2%

Source: NIST National Vulnerability Database (record CVE-2000-0053), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.