Unspecified vulnerability in the Java Management Extensions (JMX) management agent in Sun Java Runtime Environment (JRE) in JDK and JRE 6 Update 6 and earlier and JDK and JRE 5.0 Update 15 and earlier, when local monitoring is enabled, allows remote attackers to "perform unauthorized operations" via unspecified vectors.

More... (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2008-3103)