Black Ops 3 Patch fixes Exploits fixed and scorestreaks (43.*.29.5). Treyarch patched both items and now they are working correctly. Do let us know if they are not working properly for you.
Here we go again. 43.*.29.5. Control bugs with Scorestreaks. Exploits patched. And a fix for teammates griefing your Scorestreaks in HC.
— David Vonderhaar (@DavidVonderhaar) January 6, 2016