CVE 2010-3555
Unspecified vulnerability in the Deployment component in Oracle Java SE and Java for Business 6 Update 21 allows remote attackers to affect confidentiality, integrity, and availability via unknown vectors. NOTE: the previous information was obtained from the January 2011 CPU. Oracle has not commented on claims from a reliable third party coordinator that the ActiveX Plugin does not properly initialize an object field that is used as a window handle, which allows attackers to execute arbitrary code.
See the 
CVE page on Mitre.org
for more details.
