Microsoft Server Security Advisories & CVEs
1727 advisories tracked · Microsoft Security Update Guide (MSRC) · direct feeds checked every minute; rate-limited backstops use a safe source cadence
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Microsoft Security Update Guide (MSRC)
Polled via the official MSRC Security Update Guide RSS feed (api.msrc.microsoft.com, no credentials required), scoped to SERVER products only — Windows Server, Exchange, SQL Server, SharePoint, Hyper-V and companion server roles. Client-only CVEs (Edge, Office apps, consumer Windows) are filtered out via the monthly CVRF document's affected-product list.
Latest MS Server advisories
High [CVE-2021-24095] DirectX Elevation of Privilege Vulnerability
DirectX 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; and 1 more. Affected products named by the advisory: Windows Server, version 1909 (Server Core installation).
High [CVE-2021-24090] Windows Error Reporting Elevation of Privilege Vulnerability
Windows Error Reporting Elevation of Privilege Vulnerability Affected products named by the advisory: Windows Server version 2004; Windows Server version 20H2; Windows Server, version 1909 (Server Core installation).
High [CVE-2021-1729] Windows Update Stack Setup Elevation of Privilege Vulnerability
Windows Update Stack Setup 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; and 1 more. Affected products named by the advisory: Windows Server, version 1909 (Server Core installation).
Medium [CVE-2021-27052] Microsoft SharePoint Server Information Disclosure Vulnerability
Microsoft SharePoint Server Information Disclosure Vulnerability Affected products named by the advisory: Microsoft SharePoint Enterprise Server 2016; Microsoft SharePoint Server 2019.
Medium [CVE-2021-26892] Windows Extensible Firmware Interface Security Feature Bypass Vulnerability
Windows Extensible Firmware Interface 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 3 more. Affected products named by the advisory: Windows Server version 2004; Windows Server version 20H2; Windows Server, version 1909 (Server Core installation).
Medium [CVE-2021-26886] User Profile Service Denial of Service Vulnerability
User Profile Service Denial of Service Vulnerability Affected products named by the advisory: Windows Server 2012; Windows Server 2012 (Server Core installation); Windows Server 2012 R2; Windows Server 2012 R2 (Server Core installation); and 7 more. Affected products named by the advisory: Windows Server 2016 (Server Core installation); Windows Server 2019 (Server Core installation); Windows Server version 2004; Windows Server version 20H2; and 1 more.
Medium [CVE-2021-26884] Windows Media Photo Codec Information Disclosure Vulnerability
Windows Media Photo Codec Information Disclosure Vulnerability Affected products named by the advisory: Windows Server 2012; Windows Server 2012 (Server Core installation); Windows Server 2012 R2; Windows Server 2012 R2 (Server Core installation); and 7 more. Affected products named by the advisory: Windows Server 2016 (Server Core installation); Windows Server 2019 (Server Core installation); Windows Server version 2004; Windows Server version 20H2; and 1 more.
Medium [CVE-2021-26869] Windows ActiveX Installer Service Information Disclosure Vulnerability
Windows ActiveX Installer Service Information Disclosure 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 2012; Windows Server 2012 (Server Core installation); and 9 more. Affected products named by the advisory: Windows Server 2012 R2 (Server Core installation); Windows Server 2016 (Server Core installation); Windows Server 2019 (Server Core installation); Windows Server version 2004; and 2 more.
Medium [CVE-2021-24107] Windows Event Tracing Information Disclosure Vulnerability
Windows Event Tracing Information Disclosure 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.
Critical [CVE-2021-27078] 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 18; Microsoft Exchange Server 2016 Cumulative Update 19; Microsoft Exchange Server 2019 Cumulative Update 7; and 1 more. Affected products named by the advisory: Microsoft Exchange Server 2019 Cumulative Update 8.
Critical [CVE-2021-26855] Microsoft Exchange Server Remote Code Execution Vulnerability
Microsoft Exchange Server Remote Code Execution Vulnerability Affected products named by the advisory: Microsoft Exchange Server 2016 Cumulative Update 19; Microsoft Exchange Server 2019 Cumulative Update 8; Microsoft Exchange Server 2019; Microsoft Exchange Server 2013 Cumulative Update 22; and 20 more. Affected products named by the advisory: Microsoft Exchange Server 2019 Cumulative Update 2; Microsoft Exchange Server 2016 Cumulative Update 13; Microsoft Exchange Server 2013 Cumulative Update 23; Microsoft Exchange Server 2019 Cumulative Update 3; and 16 more.
High [CVE-2021-27065] Microsoft Exchange Server Remote Code Execution Vulnerability
Microsoft Exchange Server Remote Code Execution Vulnerability Affected products named by the advisory: Microsoft Exchange Server 2019; Microsoft Exchange Server 2013 Cumulative Update 22; Microsoft Exchange Server 2019 Cumulative Update 2; Microsoft Exchange Server 2016 Cumulative Update 13; and 21 more. Affected products named by the advisory: Microsoft Exchange Server 2013 Cumulative Update 23; Microsoft Exchange Server 2019 Cumulative Update 3; Microsoft Exchange Server 2016 Cumulative Update 14; Microsoft Exchange Server 2019 Cumulative Update 4; and 17 more.
High [CVE-2021-26858] Microsoft Exchange Server Remote Code Execution Vulnerability
Microsoft Exchange Server Remote Code Execution Vulnerability Affected products named by the advisory: Microsoft Exchange Server 2019; Microsoft Exchange Server 2013 Cumulative Update 22; Microsoft Exchange Server 2019 Cumulative Update 2; Microsoft Exchange Server 2016 Cumulative Update 13; and 20 more. Affected products named by the advisory: Microsoft Exchange Server 2013 Cumulative Update 23; Microsoft Exchange Server 2019 Cumulative Update 3; Microsoft Exchange Server 2016 Cumulative Update 14; Microsoft Exchange Server 2019 Cumulative Update 4; and 16 more.
High [CVE-2021-26857] Microsoft Exchange Server Remote Code Execution Vulnerability
Microsoft Exchange Server Remote Code Execution Vulnerability Affected products named by the advisory: Microsoft Exchange Server 2016 Cumulative Update 19; Microsoft Exchange Server 2019 Cumulative Update 8; Microsoft Exchange Server 2019; Microsoft Exchange Server 2013 Cumulative Update 22; and 22 more. Affected products named by the advisory: Microsoft Exchange Server 2019 Cumulative Update 2; Microsoft Exchange Server 2016 Cumulative Update 13; Microsoft Exchange Server 2013 Cumulative Update 23; Microsoft Exchange Server 2019 Cumulative Update 3; and 18 more.
High [CVE-2021-1732] Windows Win32k Elevation of Privilege Vulnerability
Windows Win32k Elevation of Privilege Vulnerability Affected products named by the advisory: Windows Server 2019; Windows Server 2019 (Server Core installation); Windows Server, version 1909 (Server Core installation); Windows Server version 2004; and 1 more. Affected products named by the advisory: Windows Server version 20H2.
High [CVE-2020-1190] Windows State Repository Service Elevation of Privilege Vulnerability
An elevation of privilege vulnerability exists when the Windows State Repository Service improperly handles objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code in an elevated context. An attacker could exploit this vulnerability by running a specially crafted application on the victim system. The update addresses the vulnerability by correcting the way the Windows State Repository Service handles objects in memory. 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 3 more. Affected products named by the advisory: Windows Server, version 1803 (Server Core Installation); Windows Server, version 1903 (Server Core installation); Windows Server, version 1909 (Server Core installation).
High [CVE-2020-1176] Jet Database Engine Remote Code Execution Vulnerability
A remote code execution vulnerability exists when the Windows Jet Database Engine improperly handles objects in memory. An attacker who successfully exploited this vulnerability could execute arbitrary code on a victim system. An attacker could exploit this vulnerability by enticing a victim to open a specially crafted file. The update addresses the vulnerability by correcting the way the Windows Jet Database Engine handles objects in memory. 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.
High [CVE-2020-1166] Windows Clipboard Service Elevation of Privilege Vulnerability
An elevation of privilege vulnerability exists when Windows improperly handles calls to Clipboard Service. An attacker who successfully exploited this vulnerability could run arbitrary code in the security context of the local system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. To exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability and take control over an affected system. The update addresses the vulnerability by correcting how Windows handles calls to Clipboard Service. Affected products named by the advisory: Windows Server, version 1903 (Server Core installation); Windows Server, version 1909 (Server Core installation).
High [CVE-2020-1164] Windows Runtime Elevation of Privilege Vulnerability
An elevation of privilege vulnerability exists when the Windows Runtime improperly handles objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code in an elevated context. An attacker could exploit this vulnerability by running a specially crafted application on the victim system. The update addresses the vulnerability by correcting the way the Windows Runtime handles objects in memory. 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 3 more. Affected products named by the advisory: Windows Server, version 1803 (Server Core Installation); Windows Server, version 1903 (Server Core installation); Windows Server, version 1909 (Server Core installation).
High [CVE-2020-1154] Windows Common Log File System Driver Elevation of Privilege Vulnerability
An elevation of privilege vulnerability exists when the Windows Common Log File System (CLFS) driver improperly handles objects in memory. An attacker who successfully exploited this vulnerability could run processes in an elevated context. To exploit the vulnerability, an attacker would first have to log on to the system, and then run a specially crafted application to take control over the affected system. The security update addresses the vulnerability by correcting how CLFS handles objects in memory. 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.