The Access Control plugin in eProsima Fast RTPS through 1.9.0 allows fnmatch pattern matches with topic name strings (instead of the permission expressions themselves), which can lead to unintended connections between participants in a Data Distribution Service (DDS) network.

The Access Control plugin in eProsima Fast RTPS through 1.9.0 does not check partition permissions from remote participant connections, which can lead to policy bypass for a secure Data Distribution Service (DDS) partition.