The TrendMicro Activity Monitor Module (tmactmon.sys) 2.52.0.1002 in Trend Micro Internet Pro 2008 and 2009, and Security Pro 2008 and 2009, allows local users to gain privileges via a crafted IRP in a METHOD_NEITHER IOCTL request to \Device\tmactmon that overwrites memory.
https://www.exploit-db.com/exploits/8322
https://exchange.xforce.ibmcloud.com/vulnerabilities/49513
https://euvd.enisa.europa.eu/vulnerability/EUVD-2009-0686
http://www.securitytracker.com/id?1021955
http://www.securityfocus.com/bid/34304
http://www.securityfocus.com/archive/1/502314/100/0/threaded
http://milw0rm.com/sploits/2009-trendmicro_local_expl_0day.zip