CVE-2019-11499: Dovecot

High severity, CVSS 7.5. EPSS: 2.5% chance of exploitation in the next 30 days.

In the IMAP Server in Dovecot 2.3.3 through 2.3.5.2, the submission-login component crashes if AUTH PLAIN is attempted over a TLS secured channel with an unacceptable authentication message.

Affected products

• Dovecot Dovecot: from 2.3.3, up to and including 2.3.5.2
• Fedoraproject Fedora: version 29 only; version 30 only
• Opensuse Leap: version 15.0 only; version 15.1 only

Published 2019-05-08. Last modified 2026-06-17.