Security patch for weblogic server 12.2.1.3.0

Hi Oracle Team,The weblogic server version is 12.2.1.3.0.I need to apply appropriate security patches to resolve the issues below -

1.The remote Oracle WebLogic server is affected by a remote code execution vulnerability in the Core Components subcomponent due to unsafe deserialization of Java objects by the RMI registry. An unauthenticated, remote attacker can exploit this, via a crafted Java

object, to execute arbitrary Java code in the context of the WebLogic server.Note that this plugin does not attempt to exploit this RCE directly and instead checks for the presence of the patch Oracle supplied in the April 2018 critical patch update (CPU).