Microsoft has released an out-of-schedule major security update for Internet Explorer 10 on Windows 8. These are vulnerabilities in Adobe Flash Player that Adobe rates as critical. Both Windows 8 and Windows RT, as well as Windows Server 2012, are affected. The vulnerability allows an attacker to crash a system or take control of it. If you have automatic installation of updates turned on, you don't need to take any action. Otherwise, install the update as soon as possible.
For more information and download links for manual or bulk installation, see the KB2811522 Knowledge Base article or the 2755801 Security Advisor.
The article was written for TechNet Blog CZ/SK.