SOGo before 5.12.5 does not renew the OTP if a user disables/enables it, and has a too short length (only 12 digits instead of the 20 recommended).
Exploitability
AV:NAC:HPR:HUI:RScope
S:UImpact
C:NI:LA:N2/CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:NOther