Oracle Database Discussions

I develop a solution for a company that want to list the version number from the applications that they have distributed over many servers. This solution is already developed, but one thing remains. I find it difficult to extract the version number of the Oracle databases without having to connect to the database.

Is it possible to extract the Oracle database version without having to connect to the database with credentials? commands or existing files I can access using the command prompt.

I greatly appreciate an answer to this question.