For those who have not yet seen the announcement, there is more info here: KB4374: Veeam Backup for Google Cloud - Critical Vulnerability (CVE-2022-43549)
In short:
- CVSS v3 Score: 10.0 (Critical)
- Veeam Updater component should have automatically applied the update
- To verify, check for Veeam Updater version 6.0.0.814