Buffer overflow in the IMAP service in NetWin Surgemail 3.9e and possibly other versions before 3.9g2 allows remote authenticated users to cause a denial of service (crash) and possibly execute arbitrary code via a long first argument to the APPEND command a different vector than CVE-2008-1497 and CVE-2008-1498. NOTE: due to lack of details it is not certain whether this is the same issue as CVE-2008-2859.