The argument parser of the PARTIAL command in Cyrus IMAP Server 2.2.6 and earlier allows remote authenticated users to execute arbitrary code via a certain command ("body[p") that is treated as a different command ("body.peek") and causes an index increment error that leads to an out-of-bounds memory corruption.
AV:N/AC:L/Au:N/C:C/I:C/A:C
This vulnerability has a 5.95% probability of being exploited in the next 30 days, ranking higher than 93% of all scored CVEs.