Apple hasn't patched critical vulnerabilities in macOS Big Sur & Catalina

Despite issuing an update to address two zero-day vulnerabilities in macOS Monterey, Apple has yet to apply it to the last two macOS versions, reportedly leaving up to 40% of actively used Macs at risk. Apple addressed the critical bugs in its March 31, 2022 update to macOS Monterey. As yet, however, it has not updated macOS Big Sur and macOS Catalina.According to The Mac Security Blog, Apple has traditionally supported the current and previous two versions of macOS with security updates.