Buffer overflow in Kingsoft Writer 2007 and 2010 before 2724 allows remote attackers to execute arbitrary code via a crafted RTF document.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2013-0721
http://www.kingsoft.jp/support/office/support_news/writer2010_2723
http://jvndb.jvn.jp/jvndb/JVNDB-2013-000016