Microsoft Windows Server version 20H2 vulnerabilities

Microsoft Windows Support Diagnostic Tool (MSDT) Remote Code Execution Vulnerability

Windows Client Server Run-time Subsystem (CSRSS) Elevation of Privilege Vulnerability

A remote code execution vulnerability exists when MSDT is called using the URL protocol from a calling application such as Word. An attacker who successfully exploits this vulnerability can run arbitrary code with the privileges of the calling application. The attacker can then install programs, view, change, or delete data, or create new accounts in the context allowed by the user’s rights. Please see the MSRC Blog Entry for important information about steps you can take to protect your system from this vulnerability.

Active Directory Domain Services Elevation of Privilege Vulnerability

Windows User Profile Service Elevation of Privilege Vulnerability

Windows Kerberos Remote Code Execution Vulnerability

Windows Common Log File System Driver Elevation of Privilege Vulnerability

Windows Kerberos Elevation of Privilege Vulnerability

Windows Print Spooler Elevation of Privilege Vulnerability

Windows Print Spooler Elevation of Privilege Vulnerability

Windows Runtime Remote Code Execution Vulnerability

Windows User Profile Service Elevation of Privilege Vulnerability

Win32k Elevation of Privilege Vulnerability

Windows Common Log File System Driver Elevation of Privilege Vulnerability

Active Directory Domain Services Elevation of Privilege Vulnerability

Active Directory Domain Services Elevation of Privilege Vulnerability

Win32k Elevation of Privilege Vulnerability

Win32k Elevation of Privilege Vulnerability

Win32k Elevation of Privilege Vulnerability

Microsoft is investigating reports of a remote code execution vulnerability in MSHTML that affects Microsoft Windows. Microsoft is aware of targeted attacks that attempt to exploit this vulnerability by using specially-crafted Microsoft Office documents. An attacker could craft a malicious ActiveX control to be used by a Microsoft Office document that hosts the browser rendering engine. The attacker would then have to convince the user to open the malicious document. 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. Microsoft Defender Antivirus and Microsoft Defender for Endpoint both provide detection and protections for the known vulnerability. Customers should keep antimalware products up to date. Customers who utilize automatic updates do not need to take additional action. Enterprise customers who manage updates should select the detection build 1.349.22.0 or newer and deploy it across their environments. Microsoft Defender for Endpoint alerts will be displayed as: “Suspicious Cpl File Execution”. Upon completion of this investigation, Microsoft will take the appropriate action to help protect our customers. This may include providing a security update through our monthly release process or providing an out-of-cycle security update, depending on customer needs. Please see the Mitigations and Workaround sections for important information about steps you can take to protect your system from this vulnerability. UPDATE September 14, 2021: Microsoft has released security updates to address this vulnerability. Please see the Security Updates table for the applicable update for your system. We recommend that you install these updates immediately. Please see the FAQ for important information about which updates are applicable to your system.

Windows Common Log File System Driver Elevation of Privilege Vulnerability

Windows LSA Spoofing Vulnerability

Windows Update Medic Service Elevation of Privilege Vulnerability