Today we released Security Update MS12-063 to address limited attacks against a small number of computers through a vulnerability in Internet Explorer versions 9 and earlier. We also released an update that addresses vulnerabilities in Adobe Flash Player in Internet Explorer 10 on Windows 8. The majority of customers have automatic updates enabled and will not need to take any action because protections will be downloaded and installed automatically. For those manually updating, we encourage you to apply this update as quickly as possible.
Microsoft Security Bulletin MS12-063
This security update resolves one publicly disclosed and four privately reported vulnerabilities in Internet Explorer. The most severe vulnerabilities could allow remote code execution if a user views a specially crafted Web page using Internet Explorer. An attacker who successfully exploited any of these vulnerabilities could gain the same user rights as the current user. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights. This security update is rated Critical for Internet Explorer 6, Internet Explorer 7, Internet Explorer 8, and Internet Explorer 9 on Windows clients and Moderate for Internet Explorer 6, Internet Explorer 7, Internet Explorer 8, and Internet Explorer 9 on Windows servers. Internet Explorer 10 is not affected. For more information about the vulnerabilities, see the full bulletin. This security update also addresses the vulnerability first described in Microsoft Security Advisory 2757760.
Recommendation. Most customers have automatic updating enabled and will not need to take any action because this security update will be downloaded and installed automatically. Customers who have not enabled automatic updating need to check for updates and install this update manually. For information about specific configuration options in automatic updating, see Microsoft Knowledge Base Article 294871. For administrators and enterprise installations, or end users who want to install this security update manually, Microsoft recommends that customers apply the update immediately using update management software, or by checking for updates using the Microsoft Update service.
Microsoft Security Advisory (2755801)
Microsoft is announcing the availability of an update for Adobe Flash Player in Internet Explorer 10 on all supported editions of Windows 8 and Windows Server 2012. The update addresses the vulnerabilities in Adobe Flash Player by updating the affected Adobe Flash libraries contained within Internet Explorer 10. For more information, see the advisory.
—Tyson Storey, Program Manager, Internet Explorer