The Java Runtime Environment (JRE) is part of the Java Development Kit (JDK), a set of programming tools for developing Java applications. The Java Runtime Environment provides the minimum requirements for executing a Java application; it consists of the Java Virtual Machine (JVM), core classes, and supporting files.
A vulnerability in the Hotspot subcomponent of JRE allows command execution when the user runs a specially crafted Java program.
Upgrade to JRE 5.0 Update 41, JRE 6 Update 43, or JRE 7 Update 17 or higher.
Exploit works on Oracle JRE 7 Update 17 on Windows XP SP3 English (DEP OptIn) and Windows 7 SP1 (DEP OptIn), and requires a user to open the exploit page in Internet Explorer.