
RMPocalypse: A critical bug in AMD SEV-SNP threatens cloud security.
A critical vulnerability has been identified in the AMD SEV-SNP hardware security architecture, impacting major cloud providers (AWS, Microsoft Azure, and Google Cloud) . This flaw allows malicious hypervisors to compromise encrypted virtual machines and gain full access to their memory. The attack, dubbed RMPocalypse , undermines the fundamental confidentiality and integrity guarantees on which the SEV-SNP trusted execution model is based. The research, presented at the ACM CCS 2025 conference in Taipei, details how a vulnerability is exploited during the initialization of SEV-SNP’s key structure, the Reverse Map Table (RMP) . This table maps host physical addresses to guest virtual pages










