Stack-based buffer overflow in wpsio.dll in Kingsoft WPS Office 2012 possibly 8.1.0.3238 allows remote attackers to execute arbitrary code via a long BSTR string.
https://exchange.xforce.ibmcloud.com/vulnerabilities/83862
https://euvd.enisa.europa.eu/vulnerability/EUVD-2012-4811
http://www.securityfocus.com/bid/59529
http://www.exploit-db.com/exploits/25140
http://seclists.org/fulldisclosure/2013/Apr/247
http://packetstormsecurity.com/files/121431/WPS-Office-Stack-Buffer-Overflow.html