This update for mutt fixes the following issues: - CVE-2020-14954: Fixed a response injection due to a STARTTLS buffering issue which was affecting IMAP, SMTP, and POP3 . - CVE-2020-14093: Fixed a potential IMAP Man-in-the-Middle attack via a PREAUTH response . - CVE-2020-14154: Fixed an issue where Mutt was ignoring an expired certificate and was proceeding with a connection .