Stack-based buffer overflow in nrouter.exe in IBM Lotus Domino before 8.5.3 allows remote attackers to execute arbitrary code via a long name parameter in a Content-Type header in a malformed Notes calendar (aka iCalendar or iCal) meeting request, aka SPR KLYH87LL23.
http://zerodayinitiative.com/advisories/ZDI-11-048/
http://www.securityfocus.com/archive/1/516245/100/0/threaded