Cook the spaghetti in salted water, per package instructions; drain well & rinse under cold water.
While the spaghetti is cooking, combine the rice vinegar, soy sauce, sesame oil, minced garlic, sliced Thai chile, and sugar in a large serving bowl; whisk until well combined.
Add the drained spaghetti to the whisked spicy dressing and toss to coat evenly; set aside to allow flavors to mingle for 15-30 minutes, making sure to toss the noodles every once in a while.
Add the sliced cucumber, bean sprouts, cilantro, and basil right before serving; toss to mix well. Enjoy.