7.5 High
CVSS2
Access Vector
NETWORK
Access 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
0.972 High
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.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Debian | 10 | all | vnc4 | < 4.1.1+X4.3.0-10 | vnc4_4.1.1+X4.3.0-10_all.deb |