There is a qTox 1.17.6 (current version) RCE 0day for sale on XSS.is, 20BTC is the price. My Bitcoin-fu is not that strong anymore, but should be close to $500k? This sure doesn’t look good at all, it’s quite possible to achieve integer overflow.
Rascals are always sociable, and the chief sign that a man has any nobility in his character is the little pleasure he takes in others company. Arthur Schopenhauer