CNET News.com notes that QuickTime 6.5.1, which was released on Wednesday, fixes a security flaw that was found and reported to Apple in February by eEye Digital Security. “Playing a malformed .mov (movie) file could cause QuickTime to terminate (crash),” Apple said in an advisory published on Friday. However, the security firm claims that Apple is downplaying the seriousness of the flaw in its advisory. eEye said a movie file could be created that would cause malicious code to execute when the user opened the file.