A vulnerability has been reported in Apple QuickTime, which can be exploited by malicious people to compromise a user’s system.

The vulnerability is caused due to an unspecified error within the Java
handling in QuickTime. This can be exploited to execute arbitrary code
when a user visits a malicious web site using a Java-enabled browser
e.g. Safari or Firefox.

The vulnerability is reported on a Mac OS X system using Safari and Firefox. Other browsers and platforms may also be affected.