BOSH System Metrics Server releases prior to 0.1.0 exposed the UAA password as a flag to a process running on the BOSH director. It exposed the password to any user or process with access to the same VM (through ps or looking at process details).
Exploitability
AV:NAC:LPR:LUI:NScope
S:UImpact
C:HI:NA:N6.5/CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:NOther