Microsoft Server security updates, October 2026 (Patch Tuesday 2026-10-13)

Every Microsoft server-product CVE that the Microsoft Security Update Guide published in October 2026, including the Patch Tuesday release on 2026-10-13 and any out-of-band updates. Client-only products (Edge, Office apps, consumer Windows) are not tracked.

Advisories: 718
Critical: 43
High: 494
In CISA KEV: 1

Microsoft server CVEs, October 2026

Oct 13, 2026
High [CVE-2026-85905] Windows UI Immersive Server API Elevation of Privilege Vulnerability
High8.8
Oct 13, 2026
High [CVE-2026-85902] Windows Direct Composition Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-85872] Windows Storage VSP Driver Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-83903] Windows Direct Composition Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-83900] Windows Bind Filter Driver Elevation of Privilege Vulnerability
High7.0
Oct 13, 2026
High [CVE-2026-83889] Windows DNS Server Remote Code Execution Vulnerability
High8.8
Oct 13, 2026
High [CVE-2026-83873] Windows Shell Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-83877] Windows Devices Human Interface Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-83881] Windows exFAT File System Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-83883] Windows Win32k Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-83874] Windows Event Tracing Remote Code Execution Vulnerability
High8.8
Oct 13, 2026
High [CVE-2026-83863] Servicing Stack Updates Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-83861] Windows Remote Desktop Protocol Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-83860] Windows GDI Denial of Service Vulnerability
High7.5
Oct 13, 2026
High [CVE-2026-83859] Windows NTFS Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-83857] Windows Universal Disk Format File System Driver (UDFS) Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-83856] Windows Event Logging Service Remote Code Execution Vulnerability
High7.5
Oct 13, 2026
High [CVE-2026-83850] Microsoft Windows Search Component Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-83845] Windows Internet (wininet.dll) Spoofing Vulnerability
High8.4
Oct 13, 2026
High [CVE-2026-83841] Windows Win32k Elevation of Privilege Vulnerability
High7.0
Oct 13, 2026
High [CVE-2026-83840] Windows Error Reporting Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-83837] Windows Kernel-Mode Drivers Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-83797] Windows Partition Management Driver Remote Code Execution Vulnerability
High8.8
Oct 13, 2026
High [CVE-2026-83795] Windows Internet Key Exchange (IKE) Extension Denial of Service Vulnerability
High7.5
Oct 13, 2026
High [CVE-2026-83792] Windows Device Install Service Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-83791] Windows Virtual Input Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-83789] Windows SMB Client Elevation of Privilege Vulnerability
High8.8
Oct 13, 2026
High [CVE-2026-83781] Windows Program Compatibility Assistant Service Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-83783] Windows Management Instrumentation Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-83777] Windows Bluetooth Service Elevation of Privilege Vulnerability
High8.8
Oct 13, 2026
High [CVE-2026-83778] Microsoft Internet Messaging API Remote Code Execution Vulnerability
High8.8
Oct 13, 2026
High [CVE-2026-83771] Windows Camera Frame Server Monitor Elevation of Privilege Vulnerability
High8.8
Oct 13, 2026
High [CVE-2026-83763] Windows Input System Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-83762] Win32k Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-83757] Win32k Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-83756] Windows Win32 Kernel Subsystem Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-83750] Windows Error Reporting Elevation of Privilege Vulnerability
High7.0
Oct 13, 2026
High [CVE-2026-83739] Windows Bluetooth Service Remote Code Execution Vulnerability
High7.5
Oct 13, 2026
High [CVE-2026-83732] Win32k Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-83728] Windows Hyper-V Spoofing Vulnerability
High8.8
Oct 13, 2026
High [CVE-2026-83725] Microsoft Windows Search Component Remote Code Execution Vulnerability
High8.8
Oct 13, 2026
High [CVE-2026-83721] Win32k Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-83709] Windows NTLM Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-83701] Windows Now Playing Session Manager Elevation of Privilege Vulnerability
High7.0
Oct 13, 2026
High [CVE-2026-83698] Windows Client-Side Caching (CSC) Service Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-83696] Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability
High7.0
Oct 13, 2026
High [CVE-2026-83682] Windows TCP/IP Elevation of Privilege Vulnerability
High7.0
Oct 13, 2026
High [CVE-2026-83679] Windows Defender Firewall Service Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-83677] Windows DHCP Client Denial of Service Vulnerability
High7.5
Oct 13, 2026
High [CVE-2026-83676] Windows Installer Elevation of Privilege Vulnerability
High7.0
Oct 13, 2026
High [CVE-2026-83670] Function Discovery Service (fdwsd.dll) Information Disclosure Vulnerability
High7.5
Oct 13, 2026
High [CVE-2026-83665] Windows DHCP Server Denial of Service Vulnerability
High7.5
Oct 13, 2026
High [CVE-2026-83659] Windows User Profile Service Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-83647] Windows Active Directory Domain Services Denial of Service Vulnerability
High7.5
Oct 13, 2026
High [CVE-2026-83645] Active Directory Federation Services (AD FS) Denial of Service Vulnerability
High7.5
Oct 13, 2026
High [CVE-2026-83640] Windows NTFS Remote Code Execution Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-83639] Windows Sensor Data Service Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-83638] Windows USB Driver Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-83634] Windows BitLocker Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-83587] Windows Core Messaging Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-83585] Windows NTFS Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-83579] Windows Smart Card Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-83574] Windows Search Service Elevation of Privilege Vulnerability
High7.0
Oct 13, 2026
High [CVE-2026-83570] Windows Search Service Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-83568] Windows Kernel-Mode Drivers Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-83566] Windows Win32k Elevation of Privilege Vulnerability
High7.0
Oct 13, 2026
High [CVE-2026-83523] Windows Image Acquisition Remote Code Execution Vulnerability
High8.8
Oct 13, 2026
High [CVE-2026-83522] Windows IKE Extension Spoofing Vulnerability
High8.1
Oct 13, 2026
High [CVE-2026-83514] Windows Partition Management Driver Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-83511] Active Directory Federation Services (AD FS) Spoofing Vulnerability
High7.4
Oct 13, 2026
High [CVE-2026-83509] Windows Setup Files Cleanup Elevation of Privilege Vulnerability
High7.0
Oct 13, 2026
High [CVE-2026-83505] Windows Setup Files Cleanup Elevation of Privilege Vulnerability
High7.0
Oct 13, 2026
High [CVE-2026-69454] Microsoft Azure Attestation service and Device Health Attestation Service Information Disclosure Vulnerability
High7.5
Oct 13, 2026
High [CVE-2026-69326] Graphic Fonts Remote Code Execution Vulnerability
High8.8
Oct 13, 2026
High [CVE-2026-78459] Microsoft Internet Information Services Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-69596] Windows Program Compatibility Assistant Service Elevation of Privilege Vulnerability
High7.0
Oct 13, 2026
High [CVE-2026-69783] Windows Update Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-69765] Windows Storport Miniport Driver Remote Code Execution Vulnerability
High8.8
Oct 13, 2026
High [CVE-2026-69736] Windows Credential Manager Elevation of Privilege Vulnerability
High7.0
Oct 13, 2026
High [CVE-2026-70230] Windows Audio Service Elevation of Privilege Vulnerability
High7.0
Oct 13, 2026
High [CVE-2026-70066] Windows DHCP Server Elevation of Privilege Vulnerability
High7.0
Oct 13, 2026
High [CVE-2026-70051] Windows SmartScreen Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-70006] Remote Desktop Client Remote Code Execution Vulnerability
High7.5
Oct 13, 2026
High [CVE-2026-69992] Remote Desktop Services Remote Code Execution Vulnerability
High7.5
Oct 13, 2026
High [CVE-2026-97789] Remote Desktop Client Remote Code Execution Vulnerability
High7.5
Oct 13, 2026
High [CVE-2026-97783] Microsoft Office SharePoint Spoofing Vulnerability
High8.1
Oct 13, 2026
High [CVE-2026-97755] Microsoft Office Excel Remote Code Execution Vulnerability
High8.8
Oct 13, 2026
High [CVE-2026-69452] Windows Enterprise App Management Elevation of Privilege Vulnerability
High7.1
Oct 13, 2026
High [CVE-2026-96920] Windows Program Compatibility Assistant Service Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-96867] Windows NTFS Remote Code Execution Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-96861] Network Device Enrollment Service (NDES) Denial of Service Vulnerability
High7.5
Oct 13, 2026
High [CVE-2026-96856] Windows Management Instrumentation Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-96862] Windows Spaceport.sys Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-96318] Windows Resume Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-96317] Windows Kernel Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-96313] Windows Push Notifications Elevation of Privilege Vulnerability
High7.0
Oct 13, 2026
High [CVE-2026-96309] Windows Subsystem for Linux Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-96308] Windows Installer Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-96306] Windows Sysmain Service Elevation of Privilege Vulnerability
High7.8
Oct 13, 2026
High [CVE-2026-96305] Windows Installer Elevation of Privilege Vulnerability
High7.0

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Dates are each advisory's publication date at the source, in UTC; a record with no source date is filed under the day VulniPulse first saw it.