I recommend that all interested parties read the “Internal Transfer Students” section of the following link
https://undergrad.cs.umd.edu/faq
The very first question is “Am I guaranteed admission to Computer Science if I meet the gateway requirements?”
And the answer is “Yes. All students who successfully complete the gateway requirements will be admitted to the major.”
I would also recommend going to the UMD Reddit forum and seeing what actual students say about what their experience has been applying for a CS internal transfer. I also personally know students who have done internal LEP transfers at UMD, but not for CS. It would be great if some current UMD students could add to this topic.
As a final recommendation, attend an Admitted Student Day and ask specific question about UMD CS internal transfers