The Windows installer for Apache Tomcat 6.0.0 through 6.0.20, 5.5.0 through 5.5.28, and possibly earlier versions uses a blank default password for the administrative user, which allows remote attackers to gain privileges.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7033
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A19414
https://exchange.xforce.ibmcloud.com/vulnerabilities/54182
http://www.vupen.com/english/advisories/2010/1559
http://www.vupen.com/english/advisories/2009/3185
http://www.vmware.com/support/vsphere4/doc/vsp_vc41_u1_rel_notes.html
http://www.vmware.com/security/advisories/VMSA-2011-0003.html
http://www.securitytracker.com/id?1023146
http://www.securityfocus.com/bid/36954
http://www.securityfocus.com/archive/1/516397/100/0/threaded
http://www.securityfocus.com/archive/1/507720/100/0/threaded
http://tomcat.apache.org/security-6.html
http://tomcat.apache.org/security-5.html
http://secunia.com/advisories/57126
http://secunia.com/advisories/40330
http://markmail.org/thread/wfu4nff5chvkb6xp
http://marc.info/?l=bugtraq&m=139344343412337&w=2
http://marc.info/?l=bugtraq&m=136485229118404&w=2
http://marc.info/?l=bugtraq&m=133469267822771&w=2
http://marc.info/?l=bugtraq&m=127420533226623&w=2
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c02241113