Earlier quoted context omitted.
First, you can just go look at Zerodium's website and see what they'll buy. Notice that one-off vulnerabilities aren't there at all: there are no vulnerability types on their rate sheet that a single vendor can instantaneously fix worldwide with a single patch. Notice also that with just a couple exceptions, RCEs in extremely widespread serverside web components are valued at $10k (if you believe their price list; I'…
Genuinely curious, what qualifies as one-off in these circumstances? Your phrasing-- "vulnerability...that a single vendor can instantaneously fix worldwide with a single patch" seems to me (non-professional but security interested techizen) to describe what a lot of vulnerabilities are. How would you (or a company like Zerodium) differentiate between a "one off" RCE exploit vs. the kind they would pay out for? BTW -…
In the GAE case, Google can patch all deployments of their service on the same day, which is an "instantaneous fix".
If it were an RCE with a webserver, OS or some other popular software, that can't be patched "instantaneously" "worldwide". Each entity who maintains their own (i.e. nginx, Drupal, Redis, etc.) instance needs to be alerted to the patch and then apply it. That's an incredibly long tail.