Multiple stack-based buffer overflows in SwiftView Viewer before 8.3.5, as used by SwiftView and SwiftSend, allow remote attackers to execute arbitrary code via unspecified vectors to the (1) svocx.ocx ActiveX control or the (2) npsview.dll plugin for Mozilla and Firefox.
http://www.vupen.com/english/advisories/2008/0330
http://www.swiftview.com/tech/security/bulletins/SBSV-07-10-02.htm
http://www.securitytracker.com/id?1019287
http://www.securityfocus.com/bid/27527
http://www.kb.cert.org/vuls/id/639169