OpenVPN from 2.6.0 through 2.6.10 in a server role accepts multiple exit notifications from authenticated clients which will extend the validity of a closing session
Exploitability
AV:NAC:LPR:LUI:NScope
S:UImpact
C:NI:NA:L4.3/CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:LOther