What does this means for users? I was using watchtower to auto update the images in my system. One of them was autoupdated after the failure. Can this be used

What does this means for users? I was using watchtower to auto update the images in my system. One of them was autoupdated after the failure. Can this be used to upload containers with security exploits in order to gain access to machines (i.e. does it give write access to the containers)?