Multiple buffer overflows in the SonicWall SSL-VPN NetExtender NELaunchCtrl ActiveX control before 2.1.0.51 and 2.5.x before 2.5.0.56 allow remote attackers to execute arbitrary code via a long (1) serverAddress (2) sessionId (3) clientIPLower (4) clientIPHigher (5) userName (6) domainName or (7) dnsSuffix Unicode property value. NOTE: the AddRouteEntry vector is covered by CVE-2007-5603.