An information disclosure vulnerability in the Management Console of BlackBerry UEM 12.8.0 and 12.8.1 could allow an attacker to take over a UEM user's session and perform administrative actions in the context of the user.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2018-20498
http://support.blackberry.com/kb/articleDetail?articleNumber=000052161&language=en_US