Apple has pushed out important security updates for pre-Monterey Macs.
On the heels of macOS Monterey 12.2.1, which patched a critical WebKit flaw, Apple has released updates for macOS Big Sur (11.6.4) and macOS Catalina (2022-002) that also bring important security fixes. Apple has not released any details about the updates and there are no published CVE (Common Vulnerabilities and Exposures) entries.