Insufficient Granularity of Access Control in SEV firmware can allow a privileged attacker to create a SEV-ES Guest to attack SNP guest, potentially resulting in a loss of confidentiality.
Exploitability
AV:LAC:LAT:PPR:HUI:NVulnerable System
VC:NVI:NVA:NSubsequent System
SC:HSI:NSA:N4/CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:NOther