RealVNC Client Software (VNC Viewer / VNC Server)
We can confirm that the VNC Connect client software (VNC Server and VNC Viewer) are not affected by the Spring4Shell issue (CVE-2022-22965).
RealVNC Cloud Services
RealVNC cloud services had mitigations for the Spring4Shell issue deployed on 31st March 2022.
No action is required to be taken by our customers.