Hello, MS in computer science in abroad usually requires a undergraduate degree in computer science with a cgpa of 4 out of 5. Based on the country you want to pursue your higher studies you will be required to have a valid score on either IELTS or TOEFL as a proof of your language ability. Also additional requirements will be GRE, SOP and recommendation letters. The eligibility criteria differ for each institution in a same country.

Best wishes.