FCKeditor_Arbitrary_File_Upload - hacked

I found an information on the internet and I was worried

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Description:
Multiple vendor applications utilize FCKeditor. FCKeditor contains functionality to handle file uploads and file management. A remote attacker could use this functionality to upload malicous executable files on the system. To test file upload capabilities, Acunetix WVS created a file named Acunetix_WVS_File_Upload_test.txt on the server.

link information: http://www.acunetix.com/vulnerability/a ... ile_Upload