I firmly believe that, if the NSA, CIA, and possibly the FBI found out about this exploit, and found out there would be a window of several months to exploit it

I firmly believe that, if the NSA, CIA, and possibly the FBI found out about this exploit, and found out there would be a window of several months to exploit it, then these agencies would be a danger to the safety and security of the American people. Therefore the patriotic and responsible thing would be to help vendors patch their stuff before directly disclosing the bug to any party that would be likely to abuse the exploit. The NSA doesn't play ball and responsibly disclose exploits to vendors immediately after discovering and profiling them, expressly because they want to use the exploits, so why should vendors be obligated to do the reverse?