Security Bulletin

Today we released MS13-106 which resolves a security feature bypass that can allow attackers to circumvent Address Space Layout Randomization (ASLR) using a specific DLL library (HXDS.DLL) provided as part of Microsoft Office 2007 and 2010. The...

Microsoft is updating the Certificate Trust List (CTL) for all supported releases of Microsoft Windows to remove the trust of a mis-issued third-party digital certificate, which could be used to spoof content and perform phishing or man-in-the-middle...

This week, starting Thursday, we’ll be hosting our 13th edition of BlueHat. I’m always so impressed with the level of knowledge we attract to each BlueHat, and while the event is invite-only, we’ll be sharing glimpses into the event via this blog and...

Today we’re providing advance notification for the release of 11 bulletins, five Critical and six Important, for December 2013. The Critical updates address vulnerabilities in Internet Explorer, Windows, Microsoft Exchange and GDI+. The Critical...

Today we released Security Advisory 2914486 regarding a local elevation of privilege (EoP) issue that affects customers using Microsoft Windows XP and Server 2003. Windows Vista and later are not affected by this local EoP issue. A member of the...

As the proliferation of devices continues to capture the imagination of consumers, and has ignited what is referred to as bring your own device (BYOD) revolution, many IT departments across the globe are now facing increased security considerations...

Today we’re publishing the November 2013 Security Bulletin Webcast Questions & Answers page. The majority of questions focused on the ActiveX Kill Bits bulletin (MS13-090) and the advisories. We also answered a few general questions that were not...

Microsoft is recommending that customers and CA’s stop using SHA-1 for cryptographic applications, including use in SSL/TLS and code signing. Microsoft Security Advisory 2880823 has been released along with the policy announcement that Microsoft will...

If you haven’t had a chance to see the movie Gravity, I highly recommend you take the time to check it out. The plot moves a bit slowly at times, but director Alfonso Cuaron’s work portrayal of zero gravity is worth the ticket price alone. Add in...

In light of recent research into practical attacks on biases in the RC4 stream cipher, Microsoft is recommending that customers enable TLS1.2 in their services and take steps to retire and deprecate RC4 as used in their TLS implementations. Microsoft...

In June 2013, we released EMET 4.0 and customer response has been fantastic. Many customers across the world now include EMET as part of their defense-in-depth strategy and appreciate how EMET helps businesses prevent attackers from gaining access to...

Today we released eight security bulletins addressing 19 CVE’s. Three bulletins have a maximum severity rating of Critical while the other five have a maximum severity rating of Important. We hope that the table below helps you prioritize the...