The ecalendar2 (aka cn.etouch.ecalendar2) application 4.5.3 for Android does not verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 9.6%