The Java Plug-in J2SE 1.3.0_02 through 5.0 Update 5, and Java Web Start 1.0 through 1.2 and J2SE 1.4.2 through 5.0 Update 5, allows remote attackers to exploit vulnerabilities by specifying a JRE version that contain vulnerabilities.
http://secunia.com/advisories/21570
http://securitytracker.com/id?1016732
http://securitytracker.com/id?1016733
http://sunsolve.sun.com/search/document.do?assetkey=1-26-102557-1
http://support.avaya.com/elmodocs2/security/ASA-2006-205.htm
http://www.securityfocus.com/archive/1/382413
http://www.securityfocus.com/bid/11757