Meltdown and Spectre - Modern CPUs at Risk
1 High Severity 3 Medium Severity 4 Total CVEs CVE-2025-40300 High Severity x86/vmscape Hypervisor VMSCAPE is a vulnerability that exploits insufficient branch predictor isolation between a guest and a userspace hypervisor. Since it is the userspace that consumes the poisoned branch predictors, conditionally issue an IBPB after a VMexit