Security Bulletin

Today we released security updates for Microsoft Windows, Microsoft Office, Microsoft SQL Server, and Internet Explorer. As a best practice, we encourage customers to apply security updates as soon as they are released. For more information about...

In the last several releases of Windows, we’ve been working hard to make the platform much more powerful for administrators, developers, and power users alike. PowerShell is an incredibly useful and powerful language for managing Windows domains...

Today, as part of Update Tuesday, we released 8 security bulletins. We encourage customers to apply all of these updates. For more information about this month’s security updates, including the detailed view of the Exploitability Index (XI), visit...

Today, as part of Update Tuesday, we released 13 security bulletins. We encourage customers to apply all of these updates. For more information about this month’s security updates, including a detailed view of the Exploitability Index (XI), visit the...

Update 2/22/17: Removed _Guest-to-Host DoS (non-distributed, from a single guest) _from Hyper-V escape bounty list. I am excited to announce significant expansions to the Microsoft Bounty Programs. We are evolving the ‘Online Services Bug Bounty...

Today, as part of Update Tuesday, we released 11 security bulletins. We encourage customers to apply all of these updates. For more information about this month’s security updates, including the detailed view of the Exploitability Index (XI), visit...

Today, we’re releasing the Enhanced Mitigation Experience Toolkit (EMET) 5.2, which includes increased security protections to improve your security posture. You can download EMET 5.2 from microsoft.com/emet or directly from here. Following is the...

Today, as part of Update Tuesday, we released 14 security bulletins to address vulnerabilities in Microsoft Windows, Microsoft Office, Microsoft Exchange, and Internet Explorer. We encourage customers to apply all of these updates. For more...

Today, we released Security Advisory 3046015 to provide guidance to customers in response to the SSL/TLS issue referred to by researchers as “FREAK” (Factoring attack on RSA-EXPORT Keys). Our investigation continues and we’ll take the necessary steps...

Today, as part of Update Tuesday, we released nine security bulletins– three rated Critical and six rated Important in severity, to address 56 unique Common Vulnerabilities and Exposures (CVEs) in Microsoft Windows, Microsoft Office, Internet...

Today we are releasing MS15-011 & MS15-014 which harden group policy and address network access vulnerabilities that can be used to achieve remote code execution (RCE) in domain networks. The MS15-014 update addresses an issue in Group Policy update...

Today, as part of Update Tuesday, we released eight security updates– one rated Critical and seven rated Important in severity, to address eight unique Common Vulnerabilities and Exposures (CVEs) in Microsoft Windows. We encourage you to apply all of...