As much as Flash is very vulnerable, we probably still needs it around for a while. But that doesn't mean that there is nothing we can do about it. At least, we can update it regularly to ensure we have a updated copy.
However, the update process often fails due to network, firewall, proxies etc And it becomes very frustrating to keep doing it over and over again especially in IE where the download manager is some kind of ActiveX. But there is a easier way, and you wonder why Adobe wants to complicates a simple solution.
Download Flash manually from the following URL and run it for update.
And if you need for whatever reason, the Uninstaller: