This is the best summary I could come up with:

Utilizing multiple connections to the power supply, BIOS SPI chip, and SVI2 bus, the researchers performed a voltage fault injection attack on the MCU-Z's Platform Security Processor.

"They allow an attacker to decrypt the encrypted NVMe storage and access private user data such as the phonebook, calendar entries, etc."

"Hacking the embedded car computer could allow users to unlock these features without paying," the TU Berlin researchers add.

In an email to Tom's Hardware, one of the researchers clarified that not all Tesla software upgrades are accessible, so it remains to be seen if those premium options will also be ripe for picking.

Another consequence is that the exploit can "extract an otherwise vehicle-unique hardware-bound RSA key used to authenticate and authorize a car in Tesla's internal service network."

The TU Berlin team (consisting of PhD students Christian Werling, Niclas Kühnapfel, and Hans Niklas Jacob, along with security researcher Oleg Drokin) will present their findings next week (August 9) at the Blackhat conference in Las Vegas, where we hope to hear more about all the feature upgrades that are accessible.

I'm a bot and I'm open source!