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Vulnerability record · CVE-2009-0094 · published 11 March 2009

CVE-2009-0094: Microsoft windows 2000 vulnerability

Microsoft · Windows 2000

The WINS server in Microsoft Windows 2000 SP4 and Server 2003 SP1 and SP2 does not restrict registration of the (1) "wpad" and (2) "isatap" NetBIOS names, which allows remote authenticated users to hijack the Web Proxy Auto-Discovery (WPAD) and Intra-Site Automatic Tunnel Addressing Protocol (ISATAP) features, and conduct man-in-the-middle attacks by spoofing a proxy server or ISATAP route, by registering one of these names in the WINS database, aka "WPAD WINS Server Registration Vulnerability," a related issue to CVE-2007-1692.

5.5 CVSS 2.0 Medium EPSS 23% · top 2.3%
5.5CVSS 2.0 base score
23%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
20References
16 Jun 2026Last modified by NVD

Description

The WINS server in Microsoft Windows 2000 SP4 and Server 2003 SP1 and SP2 does not restrict registration of the (1) "wpad" and (2) "isatap" NetBIOS names, which allows remote authenticated users to hijack the Web Proxy Auto-Discovery (WPAD) and Intra-Site Automatic Tunnel Addressing Protocol (ISATAP) features, and conduct man-in-the-middle attacks by spoofing a proxy server or ISATAP route, by registering one of these names in the WINS database, aka "WPAD WINS Server Registration Vulnerability," a related issue to CVE-2007-1692.

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

Affected products

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

References

LinkTags
http://blogs.technet.com/srd/archive/2009/03/13/ms09-008-dns-and-wins-server-security-update-in-more-detail.aspx
http://osvdb.org/52520
http://secunia.com/advisories/34217
http://support.avaya.com/elmodocs2/security/ASA-2009-083.htm
http://www.securityfocus.com/bid/34013
http://www.securitytracker.com/id?1021829
http://www.us-cert.gov/cas/techalerts/TA09-069A.html US Government Resource
http://www.vupen.com/english/advisories/2009/0661
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-008
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6117
http://blogs.technet.com/srd/archive/2009/03/13/ms09-008-dns-and-wins-server-security-update-in-more-detail.aspx
http://osvdb.org/52520
http://secunia.com/advisories/34217
http://support.avaya.com/elmodocs2/security/ASA-2009-083.htm
http://www.securityfocus.com/bid/34013
http://www.securitytracker.com/id?1021829
http://www.us-cert.gov/cas/techalerts/TA09-069A.html US Government Resource
http://www.vupen.com/english/advisories/2009/0661
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-008
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6117

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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-2009-0094), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.