I thought that it is the norm for M$ to hand out the zero-days to the 3-letter-agencies for "a while" and patches them ONLY when someone else gets hold and starts using the same vuln.. so it makes PERFECT sense that they would do something like that. Also who in their right mind allow Word/Excel/Powerpoint to access the internet? (oh yes it's called "365" and it makes software, that is completely unfit for the task,…
Not sure why you're being downvoted. This is literally the company that built in "_NSAKEY" into the kernel, which is still present (just called "_KEY2" now.
I've seen a lot of concern about "_key2" and "_NSAKEY" being expressed over the years, but scant technical detail.