Insecure method vulnerability in the ChilkatCrypt2.ChilkatCrypt2.1 ActiveX control (ChilkatCrypt2.dll 4.3.2.1) in Chilkat Crypt ActiveX Component allows remote attackers to create and overwrite arbitrary files via the WriteFile method.  NOTE: this could be leveraged for code execution by creating executable files in Startup folders or by accessing files using hcp:// URLs.  NOTE: some of these details are obtained from third party information.