From Eclipse OpenJ9 0.15 to 0.16, access to diagnostic operations such as causing a GC or creating a diagnostic file are permitted without any privilege checks.
Exploitability
AV:NAC:LPR:NUI:NScope
S:UImpact
C:NI:HA:H9.1/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:HOther