An authentication issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.6.5, macOS Monterey 12.3, Security Update 2022-003 Catalina. A local attacker may be able to view the previous logged in user’s desktop from the fast user switching screen.

References

• https://nvd.nist.gov/vuln/detail/CVE-2022-22656
• https://support.apple.com/en-us/HT213183
• https://support.apple.com/en-us/HT213184
• https://support.apple.com/en-us/HT213185