What’s Vulnerable › Vulnerabilities

CVE-2009-0093

• Severity: low (CVSS 3.5 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 17.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2009-03-11 · updated 2026-06-16
• Weakness: CWE-20

Description

Windows DNS Server in Microsoft Windows 2000 SP4, Server 2003 SP1 and SP2, and Server 2008, when dynamic updates are enabled, does not restrict registration of the "wpad" hostname, which allows remote authenticated users to hijack the Web Proxy Auto-Discovery (WPAD) feature, and conduct man-in-the-middle attacks by spoofing a proxy server, via a Dynamic Update request for this hostname, aka "DNS Server Vulnerability in WPAD Registration Vulnerability," a related issue to CVE-2007-1692.

Affected products

• Microsoft Windows 2000: all versions
• Microsoft Windows Server 2003: all versions
• Microsoft Windows Server 2008: all versions

References

• http://blog.ncircle.com/blogs/vert/archives/2009/03/successful_exploit_renders_mic.html
• http://blogs.technet.com/srd/archive/2009/03/13/ms09-008-dns-and-wins-server-security-update-in-more-detail.aspx
• http://osvdb.org/52519
• http://secunia.com/advisories/34217
• http://support.avaya.com/elmodocs2/security/ASA-2009-083.htm
• http://www.securityfocus.com/bid/33989
• http://www.securitytracker.com/id?1021830
• http://www.us-cert.gov/cas/techalerts/TA09-069A.html
• 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%3A6138
• http://blog.ncircle.com/blogs/vert/archives/2009/03/successful_exploit_renders_mic.html

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