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Vulnerability record · CVE-2000-1218 · published 14 April 2000

CVE-2000-1218: Microsoft windows 2000 origin validation error vulnerability

Microsoft · Windows 2000

The default configuration for the domain name resolver for Microsoft Windows 98, NT 4.0, 2000, and XP sets the QueryIpMatching parameter to 0, which causes Windows to accept DNS updates from hosts that it did not query, which allows remote attackers to poison the DNS cache.

9.8 CVSS 3.1 Critical EPSS 6.3% · top 6.7% CWE-346 · Origin validation error
9.8CVSS 3.1 base score, v2 7.5
6.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
5Affected product versions listed by NVD
4References
16 Jun 2026Last modified by NVD

Description

The default configuration for the domain name resolver for Microsoft Windows 98, NT 4.0, 2000, and XP sets the QueryIpMatching parameter to 0, which causes Windows to accept DNS updates from hosts that it did not query, which allows remote attackers to poison the DNS cache.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

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

References

LinkTags
http://www.kb.cert.org/vuls/id/458659 Third Party AdvisoryUS Government Resource
https://exchange.xforce.ibmcloud.com/vulnerabilities/4280 Third Party AdvisoryVDB Entry
http://www.kb.cert.org/vuls/id/458659 Third Party AdvisoryUS Government Resource
https://exchange.xforce.ibmcloud.com/vulnerabilities/4280 Third Party AdvisoryVDB Entry

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Source: NIST National Vulnerability Database (record CVE-2000-1218), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.