Unrestricted file upload vulnerability in editor/filemanager/browser/default/connectors/php/connector.php in FCKeditor 2.2 as used in Falt4 CMS Nuke ET and other products allows remote attackers to execute arbitrary code by creating a file with PHP sequences preceded by a ZIP header uploading this file via a FileUpload action with the application/zip content type and then accessing this file via a direct request to the file in UserFiles/File/ probably a related issue to CVE-2005-4094. NOTE: some of these details are obtained from third party information.