Privilege escalation in cybersecurity refers to the act of gaining unauthorized access to higher-level privileges on a computer system or network. It is a type of attack that occurs when an attacker gains access to a low-level account on a system and then uses that access to gain higher-level, administrator privileges.

Many thanks to @conda from the youtube channel youtube.com/watch?v=VpNaPAh93vE for providing this PrivEsc Methodology Mind Map.