What is the term that describes the situation when a malicious user/attacker can exit the restrictions of a single host and access other nodes on the network?

Host escape, often synonymous with VM escape in virtualized environments, refers to the critical vulnerability where an attacker can bypass the isolation mechanisms of a virtual machine, container, or other confined execution environment. This allows them to gain control over the host operating system or hypervisor, subsequently enabling access to other interconnected nodes and resources on the network.

Guest escape is a specific term referring to escaping a virtual machine, whereas host escape is a broader term encompassing any escape from an isolated host environment to other network nodes.

Provider exit is not a recognized industry term for an attacker breaking out of an isolated host environment.

Escalation of privileges refers to gaining higher access rights *within* the current system, which may be a step in a host escape, but it is not the act of breaking out of the host itself.