Config drive password is unsafe

[gu haven]

Hi Friends
           I have test config drive features
https://cwiki.apache.org/confluence/display/CLOUDSTACK/Using+ConfigDrive+for+Metadata%2C+Userdata+and+Password#UsingConfigDriveforMetadata,UserdataandPassword-OpenStack(cloud-init)compatibility(version2
           In Windows Guest  the password in config drive cdrom can be access 
by all user ，so everyuser guest VM  could get the administrator password， It is 
not  security，Is there a safer way。