Nope. Two ways to do this:
-Use an variable isolated power supply (a very small one since you just need a voltage signal and not a current) that is being directly controlled by the MCU. Potentially simpler and more straightforward, but slower transient response than the next method.
-Power some regular DAC circuitry off of an isolated power supply. Feed control signals from the MCU to this DAC using digital isolators. Even something as simple as a PWM Lowpass RC Filter DAC will work.
It's easier to pass isolated digital signals than analog ones, so it's better to pass digital signals across the isolation barrier and then generate the analog signal on the isolated side, rather than to generate the analog signal and then pass it through the isolation barrier.