CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:N/I:P/A:N
EPSS
Percentile
75.6%
Pieter Hintjens reports:
It is easy to bypass the security mechanism in 4.1.0 and 4.0.5 by
sending a ZMTP v2 or earlier header. The library accepts such
connections without applying its security mechanism.