generally webMethods 9.5 should be able to use TLS v1.2 as it is running on Java 7.
At least after applying the Fix for the Poodle issue and we have currently a newer Fix installed.
Unfortunately I did not find any setting to restrict the TLS version for LDAP directory service in MWS, as I do not want to disable TLS v1.0 and TLS v1.1 completely at the moment. This might be done later on.
I have already openend an incident with SAG in parallel to get this investigated officially.
We are preparing a Migration to wM 9.12 where it seems to work with TLS v1.2 so far as I can enable the directory service there.
Here is the StackTrace from full.log:
Remote host closed connection during handshake (91)