WeFi 3.2.1.4.1, when diagnostic mode is enabled, stores (1) WEP, (2) WPA, and (3) WPA2 access-point keys in (a) ClientWeFiLog.dat, (b) ClientWeFiLog.bak, and possibly (c) a certain .inf file under %PROGRAMFILES%\WeFi\Users\, and uses cleartext for the ClientWeFiLog files, which allows local users to obtain sensitive information by reading these files.
https://exchange.xforce.ibmcloud.com/vulnerabilities/43621
http://www.securityfocus.com/bid/30088
http://www.securityfocus.com/archive/1/494026/100/0/threaded
http://www.securityfocus.com/archive/1/493946/100/0/threaded
http://securityreason.com/securityalert/3987