A spokesperson for the family has asked for privacy at this time, adding that Cameron's "spirit will live on through the kindness and compassion of all who knew and loved him".
The actor uploaded a black-and-white close-up shot of Cameron and wrote: "Too young".
A Disney Channel spokesperson released a statement Sunday saying that from a young age, Boyce dreamed of sharing his artistic talents with the world and was fueled by a desire to make a difference in peoples' lives through his humanitarian work.
Skai Jackson also urged trolls not to post or share memes about Cameron's passing. "There is a hole in my heart that will never heal left for you". "Too amusing. Just the nicest, most talented, and most decent kid around", Adam Sandler tweeted. "All our hearts are broken". "I'm following in the footsteps of some really strong men and women who have showed me what it means to give back; it's the greatest way to fulfill yourself". "I am so distraught and I can not stop crying", the actress wrote.
Adam Sandler, who played Cameron's dad in the comedy film Grown Ups and Grown Ups 2, also shared a heart-wrenching tribute to the star. Cared so much about the world.
"We are utterly heartbroken and ask for privacy during this immensely hard time as we grieve the loss of our precious son and brother", their statement continues.
It's insane, we can tweet whenever we want and we can use social media and Instagram and make the world a better place, instead of a worse one, which so many people use it for...
Descendants director Kenny Ortega penned a series of Instagram posts, each with touching tributes.
Co-star Skai Jackson also shared the devastating loss, noting on Instagram: "I am at a loss for words".
Alongside a photo of the two together along with Salma's daughter Valentina Paloma at the 2010 screening of Kahlil Gibran's The Prophet in L.A. and a promotional shot from the movie, the Frida star remembered Cameron with her most touching memories of the rising star. "We offer our deepest condolences to his family, cast mates and colleagues and join his many millions of fans in grieving his untimely passing".