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Vulnerability record · CVE-2000-0331 · published 20 April 2000

CVE-2000-0331: Microsoft terminal server vulnerability

Microsoft · Terminal Server

Buffer overflow in Microsoft command processor (CMD.EXE) for Windows NT and Windows 2000 allows a local user to cause a denial of service via a long environment variable, aka the "Malformed Environment Variable" vulnerability.

5.0 CVSS 2.0 Medium EPSS 7.5% · top 5.7%
5.0CVSS 2.0 base score
7.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
6References
16 Jun 2026Last modified by NVD

Description

Buffer overflow in Microsoft command processor (CMD.EXE) for Windows NT and Windows 2000 allows a local user to cause a denial of service via a long environment variable, aka the "Malformed Environment Variable" vulnerability.

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

Affected products

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

References

LinkTags
http://archives.neohapsis.com/archives/bugtraq/2000-04/0147.html
http://www.securityfocus.com/bid/1135 PatchVendor Advisory
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2000/ms00-027
http://archives.neohapsis.com/archives/bugtraq/2000-04/0147.html
http://www.securityfocus.com/bid/1135 PatchVendor Advisory
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2000/ms00-027

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Related vulnerabilities

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

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Source: NIST National Vulnerability Database (record CVE-2000-0331), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.