Secunia is missing at least two that I’m aware of. Why? Because two of my users with “fully patched” Vista laptops came back from a convention with pwned laptops.
Is this recent? I know there are critical flaws that are supposed to be addressed on Tuesday. It’s possible, although highly unlikely, that these flaws were exploited. I say this because hackers are generally reactive and only attack systems after Microsoft patches them along with the information on precisely what the vulnerability is. To my knowledge they haven’t released what the exact issues are - just that they are critical.