Flaw bug created to hold information about an old flaw we knew something about. For more details see the MITRE CVE description.
MITRE description: Format string vulnerability in Evolution 1.4 through 2.3.6.1 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via the calendar entries such as task lists, which are not properly handled when the user selects the Calendars tab.