A qualified majority needs

(1) 55% of countries [15 atm] (2) representing 65% of EU population.

If one of the above is not met, a blocking minority (usually) needs >=4 countries to vote against a proposal. Germany voting against CSAR would mean (2) is not met in this case.

Source: https://www.consilium.europa.eu/en/council-eu/voting-system/...