All Oracle VM software can be downloaded from the Oracle Software Delivery Cloud:

https://edelivery.oracle.com/oraclevm

You must be a registered user, logged in and have accepted the terms and conditions to download software from the Oracle Software Delivery Cloud.

Software downloads are available as Media Packs, each of which represents a different release of the software. It is recommended that you select the most recent Media Pack to obtain patch updates to the software that you intend to install. Each Media Pack contains a collection of ISOs and Zip archives that are available for download. You can select the components that you require for your deployment and download each of these using your web browser.

Depending on your installation strategy, ISOs and Zip archives may need to be copied to the relevant host or hosts involved in a deployment, or should be placed in shared storage accessible to the systems involved.