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Vulnerability Score 5.0 5.0
CVE Id CVE-1999-1222
Last Modified 05 Sep 2008 04:19:00
Published 31 Dec 1999 12:00:00
Confidentiality Impact NONE NONE
Integrity Impact NONE NONE
Availability Impact PARTIAL PARTIAL
Access Vector NETWORK
Access Complexity LOW
Authentication NONE



Netbt.sys in Windows NT 4.0 allows remote malicious DNS servers to cause a denial of service (crash) by returning as the IP address for a DNS host name lookup.

Vulnerable Systems

Operating System

  • Microsoft Windows Nt 4.0


XF - dns-netbtsys-dos(3893)

MSKB - Q188571

Last Updated: 27 May 2016 10:35:20