The page itself even mentions that it's an old exploit, it seems:

> Plundervolt was first reported on June 7, 2019 by a group of international researchers:

And that it appears to be fixed?

> If you do not use SGX, you do not need to do anything. If you do use SGX: Intel has released a microcode update that - together with a BIOS update - allows disabling of the undervolting interface. The fact that undervolting is disabled will be reflected in remote attestation. More information can be found in Intel's security advisory.