Integer overflow in inetcomm.dll in Microsoft Outlook Express 5.5 SP2 6 and 6 SP1; Windows Live Mail on Windows XP SP2 and SP3 Windows Vista SP1 and SP2 Windows Server 2008 Gold SP2 and R2 and Windows 7; and Windows Mail on Windows Vista SP1 and SP2 Windows Server 2008 Gold SP2 and R2 and Windows 7 allows remote e-mail servers and man-in-the-middle attackers to execute arbitrary code via a crafted (1) POP3 or (2) IMAP response as demonstrated by a certain +OK response on TCP port 110 aka \Outlook Express and Windows Mail Integer Overflow Vulnerability.\