CIW Exam 1D0-571 Topic 3 Question 12 Discussion

A disgruntled employee has discovered that the company Web server is not protected against particular buffer overflow vulnerability. The disgruntled employee has created an application to take advantage of this vulnerability and secretly obtain sensitive data from the Web server's hard disk. This application sends a set of packets to the Web server that causes it to present an unauthenticated terminal with root privileges. What is the name for this particular type of attack?