Users will soon be able to access ubiquitously present appliances anywhere and anytime through a pervasive digital home environment. For this, we need middleware that provides a high-level abstraction for zero-configuration mid interoperability among middleware, makes each appliance's behavior context-aware, and supports a variety of adaptive behaviors. This paper identifies context-aware and adaptive middleware, called universal home network middleware, for the future pervasive digital home environment. It provides a desirable environment that supports adaptability and dynamic composition through appropriate high-level abstraction.