important · Physical / Firmware
Laser faults restore Secure debug on a permanently locked RP2350 A4.
Affects
Raspberry Pi RP2350 A4, a dual-core microcontroller used in embedded devices.
The path requires possession, destructive backside decapsulation, SWD access and laboratory-grade photon-emission and laser-fault equipment.
Detail and 1 source
Researchers nevertheless restored the Secure debugger and recovered the vendor-challenge 128-bit secret from OTP.