The FPUpdater tool allows you to update installed Java Development Kit (JDK) and Java Runtime Environment (JRE) software to address the hang that occurs when parsing strings like "2.2250738585072012e-308" to a binary floating point number, as described in Security Alert for CVE-2010-4476 Released.

The FPUpdater tool is recommended for the following Oracle JRE releases:

J2SE 1.4.2 - Required for updates prior to, and including, 1.4.2_29

J2SE 5.0 - Required for updates prior to, and including, 5.0u27

J2SE for Embedded 5.0 - Required for updates prior to, and including, 5.0u27

Java SE 6 - Required for updates prior to, and including, 6u23

Java SE for Embedded 6 - Required for updates prior to, and including, 6u23

Java Real-Time System 2 - Required for updates prior to, and including, 2.2u1

JRockit R27 - Required for updates prior to, and including, R27.6.8

JRockit R28 - Required for updates prior to, and including, R28.1.1

FPUpdater Tool will change the JRE/JDK software instance used for executing the tool.