Intel TDX and AMD SEV-SNP freshness gap security flaw
Vulnerability
Updated: 14.09.2026 19:58
· First: 14.09.2026 19:58
· 📰 1 src / 1 articles
· H score: 11
A freshness flaw in Intel TDX and AMD SEV-SNP lets a DDR5 interposer attack make stale encrypted memory look current, undermining confidential-computing integrity. The weakness affects cloud servers that rely on scalable memory encryption and can be abused after brief physical access to the machine. The same design gap also extends to Intel Scalable SGX, and the disclosed attack can read or alter protected memory without the encryption engine detecting the tampering. No simple patch exists; only mitigations such as limiting vulnerable memory-management features or checking whether critical writes landed can reduce risk.