Date: March 2026 The Monivisor hyper‑visor family has become a de‑facto platform for cloud‑native workloads because of its lightweight design and support for nested virtualization. In this paper we disclose Monivisor Top Full Crack (MTFC) , a previously unknown remote‑code‑execution (RCE) flaw that allows an attacker with unprivileged guest‑level code execution to compromise the host hyper‑visor and any co‑located guests. MTFC is triggered by a malformed TOP control‑register write that bypasses the hyper‑visor’s page‑table validation routine, enabling an attacker to overwrite arbitrary host‑memory structures, including the VCPU’s vmcs and the host kernel’s cred object.