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TEE.Fail: DDR5 physical interposition exposes CPU TEE keys

🔓 A team of researchers from Georgia Tech, Purdue University and security firm Synkhronix disclosed TEE.Fail, a side‑channel that inspects DDR5 memory traffic to extract secrets from processor TEEs. Using an inexpensive interposition device built from off‑the‑shelf parts for under $1,000, the technique can recover attestation and signing keys from Intel SGX/TDX and AMD SEV‑SNP with Ciphertext Hiding, and can be used to undermine GPU confidential computing. Vendors assert that physical bus attacks remain out of scope.