AI Score
Confidence
High
EPSS
Percentile
35.0%
In KDE KMail 19.12.3 (aka 5.13.3), the SMTP STARTTLS option is not honored (and cleartext messages are sent) unless “Server requires authentication” is checked.
bugs.kde.org/show_bug.cgi?id=423423
nostarttls.secvuln.info