The results of this work allowed to identify a number of threats to the cybersecurity of automated security-critical automotive systems, which reduces the efficiency of operation, road safety and system safety. Wired or wireless access to the information networks of the modern vehicles allows you to gain control over its power unit, chassis, security system components and comfort systems. According to the criteria for evaluating on-board electronics, the presence of poorly-protected communication channels, the danger of external blocking of vital systems, 75% of the researching modern vehicles do not meet the minimum requirements for cybersecurity. The revealed vulnerabilities of the security-critical automotive systems lead to the need to develop methods for mechanical and electronic protection of the modern vehicle. The law of normal distribution of average points of expert evaluation of cybersecurity of the modern vehicle is defined. On the basis of the system approach, the ranking of the main threats to cybersecurity of the modern vehicle is performed. Electronic systems of the body of the modern vehicles have the greatest probability of damage by intruders, which can lead to theft of the vehicle. With the use of the complex of safety criteria of modern vehicles, the probability and possible consequences of risks in the interception of the control of vehicles are determined. The obtained results can be used at the stages of production and operation of the vehicles for ground support of aircraft flights with the aim to improve both cybersecurity, road safety and system safety as a whole taking into account its life-cycle management.