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Given the vagueness of this announcement, how can someone know their system might be affected or not? Can you make a proper public post (not a tweet) that might not fully disclose the vulnerability but at least describe the nature of the issue and a provisional plan of action?
As with most logic flaws, a description of the bug is identical to writing an exploit for it. Therefore, no, there's not much we can say right now. Initial notifications are going out tomorrow, then we'll make it public a few days afterward.
