Even up to date installations of Flash are currently vulnerable to a new zero-day exploit that’s showing up in the wild. The exploit has already been added to at least one exploitation kit, which means attacks using this exploit are likely to increase rapidly. The exploit can be used to gain unauthorized access to affected computers.

Anyone using a web browser with Flash enabled should be extremely cautious when browsing web sites not known to be safe. The safest course of action is to disable Flash in your browser.

I personally use Firefox with Flash enabled, but I have the Flash add-on configured to always ‘Ask to activate’. That way any time I visit a web site that wants to display Flash content, I can avoid any danger by leaving Flash disabled for that site.