CVE-2000-0331

NONECVSS 0.0Elevated

0.0

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.

CVSS v3: —
EG Score: —
EPSS: 95.1%
KEV: Not listed

Published

April 20, 2000

Last Modified

April 16, 2026

References (6)

cve@mitrehttp://archives.neohapsis.com/archives/bugtraq/2000-04/0147.html
cve@mitrehttp://www.securityfocus.com/bid/1135
cve@mitrehttps://docs.microsoft.com/en-us/security-updates/securitybulletins/2000/ms00-027
af854a3a-2127-422b-91ae-364da2661108http://archives.neohapsis.com/archives/bugtraq/2000-04/0147.html
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/1135
af854a3a-2127-422b-91ae-364da2661108https://docs.microsoft.com/en-us/security-updates/securitybulletins/2000/ms00-027

Data Freshness Timeline

(refreshed 10× in last 7d / 16× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-29 13:40 UTCepss_batch
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2026-05-18 21:29 UTCepss_batch
2026-05-18 21:29 UTCepss_batch

Frequently asked(4)

What is CVE-2000-0331?

CVE-2000-0331 is a none vulnerability published on April 20, 2000. 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.

When was CVE-2000-0331 disclosed?

CVE-2000-0331 was first published in the National Vulnerability Database on April 20, 2000, with the most recent update on April 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2000-0331 actively exploited?

CVE-2000-0331 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 95.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-2000-0331?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2000-0331, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2000-0331

📅 Published

🔄 Last Modified

🔗 References (6)