Microsoft Server Security Advisories & CVEs
1207 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-2026-54127] Windows Hyper-V Elevation of Privilege Vulnerability
Windows Hyper-V Elevation of Privilege Vulnerability Affected products named by the advisory: Windows Server 2022; Windows Server 2025.
High [CVE-2026-56155] Active Directory Federation Services Elevation of Privilege Vulnerability
Active Directory Federation Services Elevation of Privilege Vulnerability Affected products named by the advisory: Windows Server 2019; Windows Server 2022; Windows Server 2025; Windows Server 2016; and 2 more. Affected products named by the advisory: Windows Server 2012 R2.
High [CVE-2026-55144] Windows Cryptography API: Next Generation (CNG) Tampering Vulnerability
Windows Cryptography API: Next Generation (CNG) Tampering Vulnerability Affected products named by the advisory: Windows Server 2022; Windows Server 2025.
High [CVE-2026-55002] Microsoft SQL Server Elevation of Privilege Vulnerability
Microsoft SQL Server Elevation of Privilege Vulnerability Affected products named by the advisory: Microsoft SQL Server 2019; Microsoft SQL Server 2025; Microsoft SQL Server 2022; Microsoft SQL Server 2016; and 1 more. Affected products named by the advisory: Microsoft SQL Server 2017.
High [CVE-2026-55009] 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 23; Microsoft Exchange Server 2019 Cumulative Update 14; Microsoft Exchange Server Subscription Edition RTM; Microsoft Exchange Server 2019 Cumulative Update 15.
High [CVE-2026-55006] Microsoft Exchange Server Elevation of Privilege Vulnerability
Microsoft Exchange Server Elevation of Privilege Vulnerability Affected products named by the advisory: Microsoft Exchange Server 2019 Cumulative Update 14; Microsoft Exchange Server 2019 Cumulative Update 15; Microsoft Exchange Server 2016 Cumulative Update 23; Microsoft Exchange Server Subscription Edition RTM.
High [CVE-2026-54119] Windows Active Directory Denial of Service Vulnerability
Windows Active Directory Denial of Service Vulnerability Affected products named by the advisory: Windows Server 2019; Windows Server 2022; Windows Server 2025; Windows Server 2016; and 2 more. Affected products named by the advisory: Windows Server 2012 R2.
High [CVE-2026-54992] Microsoft Message Queuing Queue Manager Remote Code Execution Vulnerability
Microsoft Message Queuing Queue Manager Remote Code Execution Vulnerability Affected products named by the advisory: Windows Server 2019; Windows Server 2022; Windows Server 2025; Windows Server 2016; and 2 more. Affected products named by the advisory: Windows Server 2012 R2.
High [CVE-2026-55004] Windows Print Configuration Elevation of Privilege Vulnerability
Windows Print Configuration Elevation of Privilege Vulnerability Affected products named by the advisory: Windows Server 2019; Windows Server 2022; Windows Server 2025; Windows Server 2016; and 2 more. Affected products named by the advisory: Windows Server 2012 R2.
High [CVE-2026-54111] Universal Print Management Service Elevation of Privilege Vulnerability
Universal Print Management Service Elevation of Privilege Vulnerability Affected product named by the advisory: Windows Server 2025.
High [CVE-2026-50696] Internet Key Exchange (IKE) Protocol Denial of Service Vulnerability
Internet Key Exchange (IKE) Protocol Denial of Service Vulnerability Affected products named by the advisory: Windows Server 2019; Windows Server 2022; Windows Server 2025.
High [CVE-2026-54989] Quality Windows Audio/Video Experience (QWAVE) Elevation of Privilege Vulnerability
Quality Windows Audio/Video Experience (QWAVE) Elevation of Privilege Vulnerability Affected products named by the advisory: Windows Server 2019; Windows Server 2022; Windows Server 2025; Windows Server 2016; and 2 more. Affected products named by the advisory: Windows Server 2012 R2.
High [CVE-2026-50695] Windows Active Directory Federation Services Denial of Service Vulnerability
Windows Active Directory Federation Services Denial of Service Vulnerability Affected products named by the advisory: Windows Server 2019; Windows Server 2022; Windows Server 2025; Windows Server 2016; and 2 more. Affected products named by the advisory: Windows Server 2012 R2.
High [CVE-2026-49175] Windows DNS Client Elevation of Privilege Vulnerability
Windows DNS Client Elevation of Privilege Vulnerability Affected products named by the advisory: Windows Server 2022; Windows Server 2025.
High [CVE-2026-49176] Windows WalletService Elevation of Privilege Vulnerability
Windows WalletService Elevation of Privilege Vulnerability Affected products named by the advisory: Windows Server 2019; Windows Server 2022; Windows Server 2025; Windows Server 2016.
High [CVE-2026-49171] Windows Speech Runtime Elevation of Privilege Vulnerability
Windows Speech Runtime Elevation of Privilege Vulnerability Affected products named by the advisory: Windows Server 2019; Windows Server 2022; Windows Server 2025; Windows Server 2016.
High [CVE-2026-49170] Windows StateRepository API Server file Elevation of Privilege Vulnerability
Windows StateRepository API Server file Elevation of Privilege Vulnerability Affected products named by the advisory: Windows Server 2019; Windows Server 2022; Windows Server 2025.
High [CVE-2026-49166] Windows Print Configuration Elevation of Privilege Vulnerability
Windows Print Configuration Elevation of Privilege Vulnerability Affected product named by the advisory: Windows Server 2025.
High [CVE-2026-49165] Microsoft Windows App Store Information Disclosure Vulnerability
Microsoft Windows App Store Information Disclosure Vulnerability Affected products named by the advisory: Windows Server 2019; Windows Server 2022; Windows Server 2025; Windows Server 2016.
High [CVE-2026-48571] Windows App Package Installer Elevation of Privilege Vulnerability
Windows App Package Installer Elevation of Privilege Vulnerability Affected product named by the advisory: Windows Server 2025.