This study aimed to identify the immunities granted to diplomatic envoys, with a focus on the areas in which these rights are frequently abused and their impact on the host states. The problem lies in the fact that, despite the existence of diplomatic law provisions and international conventions that set the limits of these immunities, there has been a continuous increase in their misuse by some envoys to achieve personal goals, which negatively affects diplomatic work. The study employed the descriptive and legal method to arrive at scientific solutions to the research problem. It demonstrated that diplomatic immunities are intended to ensure the freedom and independence of envoys in carrying out their duties, but such immunities must be tied to their respect for the systems and laws of the host state. The study concluded that the misuse of these immunities for illegitimate purposes threatens the national security of states and undermines their sovereignty. Moreover, espionage activities carried out by some diplomats represent the most serious violations. The study recommends setting specific regulations for diplomatic immunities and privileges, and strengthening oversight of the envoys’ activities, especially in cases where they are not performing their official duties, in order to reduce the phenomenon of espionage. Keywords: Diplomatic Immunities, Host States, International Law.