Apple · Macos Monterey · CVE-2021-30904
**Name of the Vulnerable Software and Affected Versions**
macOS Monterey versions prior to 12.0.1
**Description**
A sync issue was addressed with improved state validation. This issue may cause a user's messages to continue syncing after the user has signed out of iMessage.
**Recommendations**
For macOS Monterey versions prior to 12.0.1, update to macOS Monterey 12.0.1 to resolve the issue.