These listings capture the component versions found in the most recent maintenance release of each software version. Whenever possible, Palo Alto Networks recommends that you upgrade to the latest maintenance release for the version you are running on your appliances because each maintenance release contains additional enhancements and bug fixes as well updates that address security vulnerabilities. If you are not able to upgrade to the latest version, you should consult the PAN-OS release notes for the version you are running to determine whether there are component updates in later versions.