Network security risk assessment method for unmanned aerial vehicle system

The invention relates to the technical field of unmanned aerial vehicle system communication security, in particular to a network security risk assessment method for an unmanned aerial vehicle system. Due to the fact that a file transfer protocol used by an unmanned aerial vehicle system has vulnerabilities and complex reasons such as vulnerabilities of remote access services of the file transfer protocol, an attacker can attack an unmanned aerial vehicle communication system by means of simple to complex measures, and therefore evaluation of the vulnerabilities of the unmanned aerial vehicle system is very important. The invention discloses a network security risk assessment method based on an improved vulnerability tree, and the method comprises the steps: calculating two risk indexes, namely an influence index (TI index) and a vulnerability index (CV index), through building a vulnerability book model, quantifying the vulnerability level of an unmanned aerial vehicle system through the risk index values, a