To address this framing directly: "a bug exists" is a different truth/state of the world than "the bug is known to exist", and that's also very different from "this bug exists and an exploit is readily available". So the transmission of information about the bugs does change the state of the world, and requires action.
A bug existing or not for a person is a statement about that person's knowledge of the bug.
Is your assertion that, since you specifically didn't know about the bugs that nobody, not in Russia or anywhere else did?
Obviously if bugs are out there existing in software and you don't know about them, or the CVE system doesn't know about them, or whatever ... this does not preclude bad guys from knowing about them. In the era of agents, knowing the bug exists is equivalent to having a PoC, so the distinction completely collapses.
Arguably, the transition goes from - this bug exists but vendors ignore it because only criminals and intelligence agencies know about it to, this bug is publicly embarassing lets fix it right away.
Sweeping things under the rug is how we get insecurity. Sunshine is the best disinfectant.
There are actually three states:
- A bug exists and nobody knows
- A bug exists and some people know
- A bug exists and everyone knows
As an outside observer, there is no way for you to determine if a bug is in state one or two, you only know once it's in the third state.
Which is the entire problem here. Having the bug be known to everyone is a vastly improved state over being known to a few. Yes, the bug being completely unknown is better than being known to a few, but there is no way to ever know if that's the case.
From the outside, known to none and known to a few are indistinguishable, and thus both states are the worst possible case. The only remedy is to make the bug known to everyone such that it cannot be covertly exploited.