Stack overflow in the IMAP module (MEIMAPS.EXE) in MailEnable Professional 1.6 through 1.83 and 2.0 through 2.33, and MailEnable Enterprise 1.1 through 1.40 and 2.0 through 2.33, allows remote authenticated users to cause a denial of service (crash) via a long argument containing * (asterisk) and ? (question mark) characters to the DELETE command, as addressed by the ME-10020 hotfix.