Preheat the oven to 350°F (175°C). Grease and flour a Bundt pan.

In a large mixing bowl, combine the cake mix, water, vegetable oil, eggs, sour cream, and vanilla extract.

Beat with an electric mixer on medium speed for 2 minutes until well combined.

Pour the batter into the prepared Bundt pan.

Bake in the preheated oven for 50-55 minutes or until a toothpick inserted in the center comes out clean.

Allow the cake to cool in the pan for 10 minutes, then invert onto a wire rack to cool completely.

In a mixing bowl, beat the softened cream cheese and butter together until smooth.

Gradually add the powdered sugar and vanilla extract, mixing until creamy and well combined.

Once the cake is completely cool, frost the top and sides with the cream cheese frosting.