Microsoft Server Security Advisories & CVEs
953 advisories tracked · Microsoft Security Update Guide (MSRC) · direct feeds checked every minute; rate-limited backstops use a safe source cadence
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Official source
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-2025-27729] Windows Shell Remote Code Execution Vulnerability
Use after free in Windows Shell allows an unauthorized attacker to execute code locally. Affected products named by the advisory: Windows Server 2025; Windows Server 2025 (Server Core installation).
High [CVE-2025-27727] Windows Installer Elevation of Privilege Vulnerability
Improper link resolution before file access ('link following') in Windows Installer allows an authorized attacker to elevate privileges locally. 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 12 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-2025-27490] Windows Bluetooth Service Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Bluetooth Service allows an authorized attacker to elevate privileges locally. Affected products named by the advisory: Windows Server 2022; Windows Server 2022, 23H2 Edition (Server Core installation); Windows Server 2025; Windows Server 2025 (Server Core installation).
High [CVE-2025-27491] Windows Hyper-V Remote Code Execution Vulnerability
Use after free in Windows Hyper-V allows an authorized attacker to execute code over a network. 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 4 more. Affected products named by the advisory: Windows Server 2022, 23H2 Edition (Server Core installation); Windows Server 2025 (Server Core installation).
High [CVE-2025-27492] Windows Secure Channel Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Secure Channel allows an authorized attacker to elevate privileges locally. Affected products named by the advisory: Windows Server 2022; Windows Server 2022, 23H2 Edition (Server Core installation); Windows Server 2025; Windows Server 2025 (Server Core installation).
High [CVE-2025-27486] Windows Standards-Based Storage Management Service Denial of Service Vulnerability
Uncontrolled resource consumption in Windows Standards-Based Storage Management Service allows an unauthorized attacker to deny service over a network. 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 5 more. Affected products named by the advisory: Windows Server 2019 (Server Core installation); Windows Server 2022; Windows Server 2025 (Server Core installation).
High [CVE-2025-27489] Azure Local Elevation of Privilege Vulnerability
Improper input validation in Azure Local allows an authorized attacker to elevate privileges locally. Affected product named by the advisory: Azure Stack HCI OS.
High [CVE-2025-27487] Remote Desktop Client Remote Code Execution Vulnerability
Heap-based buffer overflow in Remote Desktop Client allows an authorized attacker to execute code over a network. Affected products named by the advisory: Remote Desktop client for Windows Desktop; Windows Server 2008 R2 Service Pack 1; Windows Server 2008 R2 Service Pack 1 (Server Core installation); Windows Server 2012; 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 2 more.
High [CVE-2025-27483] NTFS Elevation of Privilege Vulnerability
Out-of-bounds read in Windows NTFS allows an unauthorized attacker to elevate privileges locally. 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 2 more. Affected products named by the advisory: Windows Server 2019 (Server Core installation).
High [CVE-2025-27482] Windows Remote Desktop Services Remote Code Execution Vulnerability
Sensitive data storage in improperly locked memory in Remote Desktop Gateway Service allows an unauthorized attacker to execute code over a network. 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 4 more. Affected products named by the advisory: Windows Server 2022, 23H2 Edition (Server Core installation); Windows Server 2025 (Server Core installation).
High [CVE-2025-27481] Windows Telephony Service Remote Code Execution Vulnerability
Stack-based buffer overflow in Windows Telephony Service allows an unauthorized attacker to execute code over a network. 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 12 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-2025-27480] Windows Remote Desktop Services Remote Code Execution Vulnerability
Use after free in Remote Desktop Gateway Service allows an unauthorized attacker to execute code over a network. 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 8 more. Affected products named by the advisory: Windows Server 2016 (Server Core installation); Windows Server 2019 (Server Core installation); Windows Server 2022, 23H2 Edition (Server Core installation); Windows Server 2025 (Server Core installation).
High [CVE-2025-27484] Windows Universal Plug and Play (UPnP) Device Host Elevation of Privilege Vulnerability
Sensitive data storage in improperly locked memory in Windows Universal Plug and Play (UPnP) Device Host allows an authorized attacker to elevate privileges over a network. 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 12 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-2025-27469] Windows Lightweight Directory Access Protocol (LDAP) Denial of Service Vulnerability
Uncontrolled resource consumption in Windows LDAP - Lightweight Directory Access Protocol allows an unauthorized attacker to deny service over a network. 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 12 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-2025-26679] RPC Endpoint Mapper Service Elevation of Privilege Vulnerability
Use after free in RPC Endpoint Mapper Service allows an authorized attacker to elevate privileges locally. 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 12 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-2025-26678] Windows Defender Application Control Security Feature Bypass Vulnerability
Improper access control in Windows Defender Application Control (WDAC) allows an unauthorized attacker to bypass a security feature locally. Affected products named by the advisory: Windows Server 2019; Windows Server 2019 (Server Core installation); Windows Server 2022; Windows Server 2022, 23H2 Edition (Server Core installation); and 2 more. Affected products named by the advisory: Windows Server 2025 (Server Core installation).
High [CVE-2025-26675] Windows Subsystem for Linux Elevation of Privilege Vulnerability
Out-of-bounds read in Windows Subsystem for Linux allows an authorized attacker to elevate privileges locally. Affected products named by the advisory: Windows Server 2022; Windows Server 2022, 23H2 Edition (Server Core installation); Windows Server 2025; Windows Server 2025 (Server Core installation).
High [CVE-2025-26674] Windows Media Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows Media allows an authorized attacker to execute code locally. Affected products named by the advisory: Windows Server 2019; Windows Server 2019 (Server Core installation); Windows Server 2022; Windows Server 2022, 23H2 Edition (Server Core installation); and 2 more. Affected products named by the advisory: Windows Server 2025 (Server Core installation).
High [CVE-2025-26671] Windows Remote Desktop Services Remote Code Execution Vulnerability
Use after free in Windows Remote Desktop Services allows an unauthorized attacker to execute code over a network. 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 10 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 2022, 23H2 Edition (Server Core installation); and 1 more.
High [CVE-2025-26670] Lightweight Directory Access Protocol (LDAP) Client Remote Code Execution Vulnerability
Use after free in Windows LDAP - Lightweight Directory Access Protocol allows an unauthorized attacker to execute code over a network. 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 12 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.