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High [CVE-2021-33788] Windows LSA Denial of Service Vulnerability
Windows LSA Denial of Service Vulnerability Affected products named by the advisory: Windows Server 2008 R2 Service Pack 1; Windows Server 2008 R2 Service Pack 1 (Server Core installation); Windows Server 2008 Service Pack 2; Windows Server 2008 Service Pack 2 (Server Core installation); and 10 more. Affected products named by the advisory: Windows Server 2012 (Server Core installation); Windows Server 2012 R2 (Server Core installation); Windows Server 2016 (Server Core installation); Windows Server 2019 (Server Core installation); and 2 more.
High [CVE-2021-33786] Windows LSA Security Feature Bypass Vulnerability
Windows LSA Security Feature Bypass Vulnerability Affected products named by the advisory: Windows Server 2008 R2 Service Pack 1; Windows Server 2008 R2 Service Pack 1 (Server Core installation); Windows Server 2008 Service Pack 2; Windows Server 2008 Service Pack 2 (Server Core installation); and 10 more. Affected products named by the advisory: Windows Server 2012 (Server Core installation); Windows Server 2012 R2 (Server Core installation); Windows Server 2016 (Server Core installation); Windows Server 2019 (Server Core installation); and 2 more.
High [CVE-2021-33785] Windows AF_UNIX Socket Provider Denial of Service Vulnerability
Windows AF_UNIX Socket Provider Denial of Service Vulnerability Affected products named by the advisory: Windows Server 2019; Windows Server 2019 (Server Core installation); Windows Server version 2004; Windows Server version 20H2.
High [CVE-2021-33784] Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability
Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability Affected products named by the advisory: Windows Server 2019; Windows Server 2019 (Server Core installation); Windows Server version 2004; Windows Server version 20H2.
High [CVE-2021-33781] Azure AD Security Feature Bypass Vulnerability
Azure AD Security Feature Bypass Vulnerability Affected products named by the advisory: Windows Server 2016; Windows Server 2016 (Server Core installation); Windows Server 2019; Windows Server 2019 (Server Core installation); and 2 more. Affected products named by the advisory: Windows Server version 2004; Windows Server version 20H2.
High [CVE-2021-33779] Windows AD FS Security Feature Bypass Vulnerability
Windows AD FS Security Feature Bypass Vulnerability Affected products named by the advisory: Windows Server 2016; Windows Server 2016 (Server Core installation); Windows Server 2019; Windows Server 2019 (Server Core installation); and 2 more. Affected products named by the advisory: Windows Server version 2004; Windows Server version 20H2.
High [CVE-2021-33773] Windows Remote Access Connection Manager Elevation of Privilege Vulnerability
Windows Remote Access Connection Manager Elevation of Privilege Vulnerability Affected products named by the advisory: Windows Server 2012 R2; Windows Server 2012 R2 (Server Core installation); Windows Server 2016; Windows Server 2016 (Server Core installation); and 4 more. Affected products named by the advisory: Windows Server 2019 (Server Core installation); Windows Server version 2004; Windows Server version 20H2.
High [CVE-2021-33772] Windows TCP/IP Driver Denial of Service Vulnerability
Windows TCP/IP Driver Denial of Service Vulnerability Affected products named by the advisory: Windows Server version 2004; Windows Server version 20H2.
High [CVE-2021-33771] Windows Kernel Elevation of Privilege Vulnerability
Windows Kernel Elevation of Privilege Vulnerability Affected products named by the advisory: Windows Server 2012 R2; Windows Server 2012 R2 (Server Core installation); Windows Server 2016; Windows Server 2016 (Server Core installation); and 4 more. Affected products named by the advisory: Windows Server 2019 (Server Core installation); Windows Server version 2004; Windows Server version 20H2.
High [CVE-2021-33768] Microsoft Exchange Server Elevation of Privilege Vulnerability
Microsoft Exchange Server Elevation of Privilege Vulnerability Affected products named by the advisory: Microsoft Exchange Server 2016 Cumulative Update 20; Microsoft Exchange Server 2016 Cumulative Update 21; Microsoft Exchange Server 2019 Cumulative Update 10; Microsoft Exchange Server 2019 Cumulative Update 9.
High [CVE-2021-33766] Microsoft Exchange Server Information Disclosure Vulnerability
Microsoft Exchange Server Information Disclosure Vulnerability Affected products named by the advisory: Microsoft Exchange Server 2013 Cumulative Update 23; Microsoft Exchange Server 2016 Cumulative Update 19; Microsoft Exchange Server 2016 Cumulative Update 20; Microsoft Exchange Server 2019 Cumulative Update 8; and 1 more. Affected products named by the advisory: Microsoft Exchange Server 2019 Cumulative Update 9.
High [CVE-2021-33759] Windows Desktop Bridge Elevation of Privilege Vulnerability
Windows Desktop Bridge Elevation of Privilege Vulnerability Affected products named by the advisory: Windows Server 2016; Windows Server 2016 (Server Core installation); Windows Server 2019; Windows Server 2019 (Server Core installation); and 2 more. Affected products named by the advisory: Windows Server version 2004; Windows Server version 20H2.
High [CVE-2021-33758] Windows Hyper-V Denial of Service Vulnerability
Windows Hyper-V Denial of Service Vulnerability Affected products named by the advisory: Windows Server 2016; Windows Server 2016 (Server Core installation).
High [CVE-2021-33756] Windows DNS Snap-in Remote Code Execution Vulnerability
Windows DNS Snap-in Remote Code Execution Vulnerability Affected products named by the advisory: Windows Server 2008 R2 Service Pack 1; Windows Server 2008 R2 Service Pack 1 (Server Core installation); Windows Server 2008 Service Pack 2; Windows Server 2008 Service Pack 2 (Server Core installation); and 10 more. Affected products named by the advisory: Windows Server 2012 (Server Core installation); Windows Server 2012 R2 (Server Core installation); Windows Server 2016 (Server Core installation); Windows Server 2019 (Server Core installation); and 2 more.
High [CVE-2021-33743] Windows Projected File System Elevation of Privilege Vulnerability
Windows Projected File System Elevation of Privilege Vulnerability Affected products named by the advisory: Windows Server 2019; Windows Server 2019 (Server Core installation); Windows Server version 2004; Windows Server version 20H2.
High [CVE-2021-33740] Windows Media Remote Code Execution Vulnerability
Windows Media Remote Code Execution Vulnerability Affected products named by the advisory: Windows Server 2019; Windows Server 2019 (Server Core installation); Windows Server version 2004.
High [CVE-2021-31206] Microsoft Exchange Server Remote Code Execution Vulnerability
Microsoft Exchange Server Remote Code Execution Vulnerability Affected products named by the advisory: Microsoft Exchange Server 2013 Cumulative Update 23; Microsoft Exchange Server 2016 Cumulative Update 20; Microsoft Exchange Server 2016 Cumulative Update 21; Microsoft Exchange Server 2019 Cumulative Update 10; and 1 more. Affected products named by the advisory: Microsoft Exchange Server 2019 Cumulative Update 9.
High [CVE-2021-31183] Windows TCP/IP Driver Denial of Service Vulnerability
Windows TCP/IP Driver Denial of Service Vulnerability Affected products named by the advisory: Windows Server 2008 R2 Service Pack 1; Windows Server 2008 R2 Service Pack 1 (Server Core installation); Windows Server 2008 Service Pack 2; Windows Server 2008 Service Pack 2 (Server Core installation); and 10 more. Affected products named by the advisory: Windows Server 2012 (Server Core installation); Windows Server 2012 R2 (Server Core installation); Windows Server 2016 (Server Core installation); Windows Server 2019 (Server Core installation); and 2 more.
High [CVE-2021-1675 +1] Windows Print Spooler Remote Code Execution Vulnerability
A remote code execution vulnerability exists when the Windows Print Spooler service improperly performs privileged file operations. An attacker who successfully exploited this vulnerability could run arbitrary code with SYSTEM privileges. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. UPDATE July 7, 2021: The security update for Windows Server 2012, Windows Server 2016 and Windows 10, Version 1607 have been released. Please see the Security Updates table for the applicable update for your system. We recommend that you install these updates immediately. If you are unable to install these updates, see the FAQ and Workaround sections in this CVE for information on how to help protect your system from this vulnerability. In addition to installing the updates, in order to secure your system, you must confirm that the following registry settings are set to 0 (zero) or are not defined (Note: These registry keys do not exist by default, and therefore are already at the secure setting.), also that your Group Policy setting are correct (see FAQ): HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows NT\Printers\PointAndPrint NoWarningNoElevationOnInstall = 0 (DWORD) or not defined (default setting) Having NoWarningNoElevationOnInstall set to 1 makes your system vulnerable by design.
Critical [CVE-2021-26897] Windows DNS Server Remote Code Execution Vulnerability
Windows DNS Server Remote Code Execution Vulnerability Affected products named by the advisory: Windows Server 2008 R2 Service Pack 1; Windows Server 2008 R2 Service Pack 1 (Server Core installation); Windows Server 2008 Service Pack 2; Windows Server 2008 Service Pack 2 (Server Core installation); and 11 more. Affected products named by the advisory: Windows Server 2012 (Server Core installation); Windows Server 2012 R2 (Server Core installation); Windows Server 2016 (Server Core installation); Windows Server 2019 (Server Core installation); and 3 more.