An out-of-bounds read was addressed with improved input validation. This issue is fixed in macOS Mojave 10.14.3. An application may be able to read restricted memory.
CWE-125 - Out-of-Bounds Read
Out-of-bounds read is a vulnerability that allows access to memory beyond the authorized accessible location. Such a vulnerability compromises the confidentiality of the trusted environment in the application and enables an attacker to launch further attacks by leveraging the exposed information.