A flaw was discovered in fence-agents, prior to version 4.3.4, where using non-ASCII characters in a guest VM's comment or other fields would cause fence_rhevm to exit with an exception. In cluster environments, this could lead to preventing automated recovery or otherwise denying service to clusters of which that VM is a member.
Exploitability
AV:NAC:LPR:LUI:NScope
S:CImpact
C:NI:NA:L5/CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:LOther