Multiple directory traversal vulnerabilities in (1) EPSTIMAP4S.EXE and (2) SPA-IMAP4S.EXE in the IMAP service in E-Post Mail 4.05 and SPA-PRO Mail 4.05 allow remote attackers to (a) list arbitrary directories or cause a denial of service via the LIST command; or create arbitrary files via the (b) APPEND, (c) COPY, or (d) RENAME commands.