The “sa” account is installed with a default null password on (1) Microsoft SQL Server 2000, (2) SQL Server 7.0, and (3) Data Engine (MSDE) 1.0, including third party packages that use these products such as (4) Tumbleweed Secure Mail (MMS) (5) Compaq Insight Manager, and (6) Visio 2000, which allows remote attackers to gain privileges, as exploited by worms such as Voyager Alpha Force and Spida.
marc.info/?l=bugtraq&m=96333895000350&w=2
marc.info/?l=bugtraq&m=96593218804850&w=2
marc.info/?l=bugtraq&m=96644570412692&w=2
online.securityfocus.com/archive/1/273639
security-archive.merton.ox.ac.uk/bugtraq-200008/0233.html
support.microsoft.com/default.aspx?scid=kb%3B%5BLN%5D%3BQ313418
support.microsoft.com/default.aspx?scid=kb%3BEN-US%3Bq321081
www.iss.net/security_center/static/1459.php
www.kb.cert.org/vuls/id/635463
www.microsoft.com/security/security_bulletins/ms02020_sql.asp
www.osvdb.org/3570
www.securityfocus.com/bid/4797