How to check if your FW is vulnerable to Hydroph0bia (CVE-2025-4275): obtain a BIOS dump or a BIOS update for your PC, open it in UEFITool NE, open Search window on Text tab (Ctrl+F), search for Unicode text "SecureFlashCertData".
If nothing had been found, our FW is fine. Otherwise it would be found in at least BdsDxe and SecurityStubDxe, this means your FW is very likely to be vulnerable.