Apple · Macos Big Sur · CVE-2021-30668
**Name of the Vulnerable Software and Affected Versions**
macOS Big Sur versions prior to 11.4
**Description**
A person with physical access to a Mac may be able to bypass the Login Window during a software update. This issue was addressed with improved checks.
**Recommendations**
For macOS Big Sur versions prior to 11.4, update to macOS Big Sur 11.4 to resolve the issue.