The cyrus-imapd packages contain a high-performance mail server with IMAP, POP3, NNTP, and SIEVE support. Security Fix: * cyrus-imapd: buffer overflow in CalDAV request handling triggered by a long iCalendar property name For more details about the security issue, including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page listed in the References section.