Security Bulletin

Microsoft has received a small number of reports from customers and others about continued activity exploiting a vulnerability affecting the Netlogon protocol (CVE-2020-1472) which was previously addressed in security updates starting on August 11...

Following the MSRC’s 2020 Most Valuable Security Researchers announced during this year’s Black Hat, we’re excited to announce the top contributing researchers for the 2020 Third Quarter (Q3)! The top three researchers of the 2020 Q3

Is it possible to get to a state where memory safety issues would be deterministically mitigated? Our quest to mitigate memory corruption vulnerabilities led us to examine CHERI (Capability Hardware Enhanced RISC Instructions), which provides memory...

The Azure Sphere Security Research Challenge brought together 70 researchers from 21 countries to help secure Azure Sphere customers and expand Microsoft’s partnerships with the global IoT security research community. During the three-month Azure...

We’re excited to announce a significant update to the Security Update Guide, our one-stop site for information about all security updates provided by Microsoft. This new version will provide a more intuitive user experience to help protect our...

At the Microsoft Security Response Center’s (MSRC), our primary mission is to help protect our customers. One of the ways we do this is by working with security researchers to discover security vulnerabilities in our services and products, and then...

As part of our ongoing efforts towards safer systems programming, we’re pleased to announce that Windows Control Flow Guard (CFG) support is now available in the Clang C/C++ compiler and Rust. What is Control Flow Guard? CFG is a platform security...

Today we announce our Most Valuable Security Researchers for 2020! The MSRC Researcher Recognition program is an integral aspect of recognizing the ongoing partnerships with our community of talented security researchers who report through...

Security researchers are a vital component of the cybersecurity ecosystem that safeguards every facet of digital life and commerce. The researchers who devote time to uncovering and reporting security issues before adversaries can exploit them have...

Microsoft has invested in the security of open source software for many years and today I’m excited to share that Microsoft is joining industry partners to create the Open Source Security Foundation (OpenSSF), a new cross-industry collaboration...

It hardly feels like summer without the annual trip to Las Vegas for Black Hat USA. With this year’s event being totally cloud based, we won’t have the chance to catch up with security researchers, industry partners, and customers in person, an...

Partnering with the research community is an important part of Microsoft’s holistic approach to defending against security threats. Bounty programs are one part of this partnership, designed to encourage and reward vulnerability research focused on...