Comment by crote
I don't believe so? I have no doubt that there have been vulnerabilities, but the technology is quite new and barely used in practice, so I would be surprised if there have been significant exploits already - let alone ones applicable in the wild rather than a lab.
The technology is only new because the many previous attempts were so obviously failures that they never went anywhere. The history of "confidential computing" is littered with half baked attempts going back to the early 2000s in terms of hypervisors, with older attempts in the mainframe days completely forgotten.