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Vulnerability Score 5.0 5.0
CVE Id CVE-1999-1463
Last Modified 05 Sep 2008 04:19:35
Published 10 Jul 1997 12:00:00
Confidentiality Impact NONE NONE
Integrity Impact NONE NONE
Availability Impact PARTIAL PARTIAL
Access Vector NETWORK
Access Complexity LOW
Authentication NONE



Windows NT 4.0 before SP3 allows remote attackers to bypass firewall restrictions or cause a denial of service (crash) by sending improperly fragmented IP packets without the first fragment, which the TCP/IP stack incorrectly reassembles into a valid session.

Vulnerable Systems

Operating System

  • Microsoft Windows Nt 4.0


XF - nt-frag(528)

BUGTRAQ - 19970710 A New Fragmentation Attack

Last Updated: 27 May 2016 10:35:26