published May 15, 2006
NVD has not assigned a CVSS score to this record. It sits in the 99.8th percentile for exploit probability.
RealVNC 4.1.1, and other products that use RealVNC such as AdderLink IP and Cisco CallManager, allows remote attackers to bypass authentication via a request in which the client specifies an insecure security type such as "Type 1 - None", which is accepted even if it is not offered by the server, as originally demonstrated using a long password.