The IIOP OpenJDK Subsystem in WildFly before version 14.0.0 does not honour configuration when SSL transport is required. Servers before this version that are configured with the following setting allow clients to create plaintext connections: <transport-config confidentiality="required" trust-in-target="supported"/>
https://security.netapp.com/advisory/ntap-20181221-0002/
https://issues.jboss.org/browse/WFLY-9107
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14627
https://access.redhat.com/errata/RHSA-2018:3595
https://access.redhat.com/errata/RHSA-2018:3529