Directory traversal vulnerability in pb_inc/admincenter/index.php in PowerScripts PowerBook 1.21 allows remote attackers to include and execute arbitrary local files via a .. (dot dot) in the page parameter. NOTE: in some environments, this can be leveraged for remote file inclusion by using a UNC share pathname or an ftp, ftps, or ssh2.sftp URL.

More... (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2008-1537)