An attacker with knowledge of creating user accounts during VM deployment on Google Cloud Platform (GCP) using the OS Login feature, can login via SSH gaining command-line control of the operating system. This allows an attacker to gain access to sensitive data stored on the VM, install malicious software, and disrupt or disable the functionality of the VM.
Exploitability
AV:PAC:LAT:NPR:HUI:NVulnerable System
VC:HVI:HVA:NSubsequent System
SC:HSI:HSA:H8.5/CVSS:4.0/AV:P/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:H