This host is missing an important security update according to Java for Mac OS X 10.6 Update 4.
Successful exploitation may allow an untrusted Java applet to execute arbitrary code outside the Java sandbox. Visiting a web page containing a maliciously crafted untrusted Java applet may lead to arbitrary code execution with the privileges of the current user. Impact Level: System/Application
Upgrade to Java for Mac OS X 10.6 Update 4, For updates refer to http://support.apple.com/kb/HT4562
For more information on the vulnerabilities refer the below links.
Java for Mac OS X v10.6.6 and Mac OS X Server v10.6.6
CVE CVE-2010-4422, CVE-2010-4447, CVE-2010-4448, CVE-2010-4450, CVE-2010-4454, CVE-2010-4462, CVE-2010-4463, CVE-2010-4465, CVE-2010-4467, CVE-2010-4468, CVE-2010-4469, CVE-2010-4470, CVE-2010-4471, CVE-2010-4472, CVE-2010-4473, CVE-2010-4476
CVSS Base Score: 10.0