CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
EPSS
Percentile
99.8%
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.