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16,785 advisories
Each date says whether the vendor published or updated the bulletin. A vendor bulletin describes products that may be affected. It does not prove that the vulnerable product or version is installed in your environment.
Microsoft Security Response CenterCVE-2026-96306
HighCVSS 7.8
Windows Sysmain Service Elevation of Privilege Vulnerability
Out-of-bounds read in Windows Sysmain Service allows an authorized attacker to elevate privileges locally.
Affected productsWindows 10 Version 1607 for 32-bit Systems, Windows Server 2016 (Server Core installation), Windows Server 2019, Windows Server 2019 (Server Core installation)
Fixed versions10.0.14393.9612, 10.0.17763.9376, 10.0.19044.7807, 10.0.19045.7807
Vendor guidance
Install KB5126868. Install KB5126651. Install KB5126657. Install KB5126653. Install KB5127648. Install KB5127646.
Microsoft Security Response CenterCVE-2026-96305
HighCVSS 7.0
Windows Installer Elevation of Privilege Vulnerability
Use after free in Windows Installer allows an authorized attacker to elevate privileges locally.
Affected productsWindows Server 2012, Windows Server 2012 (Server Core installation), Windows Server 2012 R2, Windows Server 2012 R2 (Server Core installation)
Fixed versions6.2.9200.26434, 6.3.9600.23470, 10.0.14393.9612, 10.0.17763.9376
Vendor guidance
Install KB5126835. Install KB5126836. Install KB5126868. Install KB5126651. Install KB5126657. Install KB5126655. Install KB5126653. Install KB5127648. Install KB5126646. Install KB5127646.
Microsoft Security Response CenterCVE-2026-96304
HighCVSS 7.0
Windows USB Print Driver Elevation of Privilege Vulnerability
Use after free in Windows USB Print Driver allows an authorized attacker to elevate privileges locally.
Affected productsWindows 10 Version 21H2 for 32-bit Systems, Windows 10 Version 21H2 for ARM64-based Systems, Windows 10 Version 21H2 for x64-based Systems, Windows 10 Version 22H2 for 32-bit Systems
Fixed versions10.0.19044.7807, 10.0.19045.7807, 10.0.20348.5761, 10.0.22631.7652
Vendor guidance
Install KB5126657. Install KB5126655. Install KB5126653. Install KB5127648. Install KB5126646. Install KB5127646.
Microsoft Security Response CenterCVE-2026-96302
HighCVSS 7.0
Windows Installer Elevation of Privilege Vulnerability
Use after free in Windows Installer allows an authorized attacker to elevate privileges locally.
Affected productsWindows Server 2025, Windows Server 2025 (Server Core installation), Windows 11 Version 26H1 for ARM64-based Systems, Windows 11 version 26H1 for x64-based Systems
Fixed versions10.0.26100.33650, 10.0.28000.3231, 6.2.9200.26434, 6.3.9600.23470
Vendor guidance
Install KB5126646. Install KB5127646. Install KB5126835. Install KB5126836. Install KB5126868. Install KB5126651. Install KB5126657. Install KB5126655. Install KB5126653. Install KB5127648.
Microsoft Security Response CenterCVE-2026-96301
HighCVSS 7.0
Windows USB Print Driver Elevation of Privilege Vulnerability
Use after free in Windows USB Print Driver allows an authorized attacker to elevate privileges locally.
Affected productsWindows 10 Version 21H2 for 32-bit Systems, Windows 10 Version 21H2 for ARM64-based Systems, Windows 10 Version 21H2 for x64-based Systems, Windows 10 Version 22H2 for 32-bit Systems
Fixed versions10.0.19044.7807, 10.0.19045.7807, 10.0.20348.5761, 10.0.22631.7652
Vendor guidance
Install KB5126657. Install KB5126655. Install KB5126653. Install KB5127648. Install KB5126646. Install KB5127646.
Microsoft Security Response CenterCVE-2026-96300
HighCVSS 5.9
RPC Endpoint Mapper Service Denial of Service Vulnerability
Uncontrolled resource consumption in RPC Endpoint Mapper Service allows an unauthorized attacker to deny service over a network.
Affected productsWindows 11 Version 26H2 for ARM64-based Systems, Windows 11 Version 26H2 for x64-based Systems, Windows Server 2012, Windows 10 Version 1607 for x64-based Systems
Fixed versions10.0.26300.9711, 6.2.9200.26434, 10.0.14393.9612, 10.0.17763.9376
Vendor guidance
Install KB5127648. Install KB5126835. Install KB5126868. Install KB5126651. Install KB5126657. Install KB5126655. Install KB5126653. Install KB5126646. Install KB5127646. Install KB5126836.
Microsoft Security Response CenterCVE-2026-96254
HighCVSS 7.0
Windows USB Print Driver Elevation of Privilege Vulnerability
Use after free in Windows USB Print Driver allows an authorized attacker to elevate privileges locally.
Affected productsWindows 10 Version 21H2 for 32-bit Systems, Windows 10 Version 21H2 for ARM64-based Systems, Windows 10 Version 21H2 for x64-based Systems, Windows 10 Version 22H2 for 32-bit Systems
Fixed versions10.0.19044.7807, 10.0.19045.7807, 10.0.20348.5761, 10.0.22631.7652
Vendor guidance
Install KB5126657. Install KB5126655. Install KB5126653. Install KB5127648. Install KB5126646. Install KB5127646.
Microsoft Security Response CenterCVE-2026-96253
HighCVSS 7.0
Windows USB Print Driver Elevation of Privilege Vulnerability
Use after free in Windows USB Print Driver allows an authorized attacker to elevate privileges locally.
Affected productsWindows 10 Version 21H2 for 32-bit Systems, Windows 10 Version 21H2 for ARM64-based Systems, Windows 10 Version 21H2 for x64-based Systems, Windows 10 Version 22H2 for 32-bit Systems
Fixed versions10.0.19044.7807, 10.0.19045.7807, 10.0.20348.5761, 10.0.22631.7652
Vendor guidance
Install KB5126657. Install KB5126655. Install KB5126653. Install KB5127648. Install KB5126646. Install KB5127646.
Microsoft Security Response CenterCVE-2026-96252
HighCVSS 9.1
Active Directory Federation Services (AD FS) Spoofing Vulnerability
Improper verification of cryptographic signature in Active Directory Federation Services (AD FS) allows an unauthorized attacker to perform spoofing over a network.
Affected productsWindows Server 2012, Windows Server 2012 (Server Core installation), Windows Server 2012 R2, Windows Server 2012 R2 (Server Core installation)
Fixed versions6.2.9200.26434, 6.3.9600.23470, 10.0.14393.9612, 10.0.17763.9376
Vendor guidance
Install KB5126835. Install KB5126836. Install KB5126868. Install KB5126651. Install KB5126655. Install KB5126646.
Microsoft Security Response CenterCVE-2026-96250
HighCVSS 7.0
Windows USB Print Driver Elevation of Privilege Vulnerability
Use after free in Windows USB Print Driver allows an authorized attacker to elevate privileges locally.
Affected productsWindows 10 Version 21H2 for 32-bit Systems, Windows 10 Version 21H2 for ARM64-based Systems, Windows 10 Version 21H2 for x64-based Systems, Windows 10 Version 22H2 for 32-bit Systems
Fixed versions10.0.19044.7807, 10.0.19045.7807, 10.0.20348.5761, 10.0.22631.7652
Vendor guidance
Install KB5126657. Install KB5126655. Install KB5126653. Install KB5127648. Install KB5126646. Install KB5127646.
Microsoft Security Response CenterCVE-2026-96249
HighCVSS 7.8
Windows Win32 Kernel Subsystem Elevation of Privilege Vulnerability
Use after free in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.
Affected productsWindows 11 Version 26H2 for ARM64-based Systems, Windows 11 Version 26H2 for x64-based Systems, Windows 11 Version 25H2 for x64-based Systems, Windows Server 2025
Fixed versions10.0.26300.9711, 10.0.26200.9711, 10.0.26100.33650, 10.0.26100.9711
Vendor guidance
Install KB5127648. Install KB5126646. Install KB5127646.
Microsoft Security Response CenterCVE-2026-96248
HighCVSS 7.5
Windows Host Guardian Service Denial of Service Vulnerability
Stack-based buffer overflow in Windows Host Guardian Service allows an unauthorized attacker to deny service over a network.
Affected productsWindows 10 Version 1607 for 32-bit Systems, Windows 10 Version 1607 for x64-based Systems, Windows Server 2016, Windows Server 2016 (Server Core installation)
Fixed versions10.0.14393.9612, 10.0.17763.9376, 10.0.20348.5761, 10.0.26100.33650
Vendor guidance
Install KB5126868. Install KB5126651. Install KB5126655. Install KB5126646.
Microsoft Security Response CenterCVE-2026-96247
HighCVSS 5.5
Windows Kernel-Mode Drivers Information Disclosure Vulnerability
Use of uninitialized resource in Windows Kernel-Mode Drivers allows an authorized attacker to disclose information locally.
Affected productsWindows Server 2012 R2, Windows Server 2012 R2 (Server Core installation), Windows 10 Version 1607 for x64-based Systems, Windows Server 2016
Fixed versions6.3.9600.23470, 10.0.14393.9612, 10.0.17763.9376, 10.0.19044.7807
Vendor guidance
Install KB5126836. Install KB5126868. Install KB5126651. Install KB5126657. Install KB5126655. Install KB5126653. Install KB5127648. Install KB5126646. Install KB5127646.
Microsoft Security Response CenterCVE-2026-96246
HighCVSS 7.5
Network Policy Server (NPS) Information Disclosure Vulnerability
Out-of-bounds read in Network Policy Server (NPS) allows an unauthorized attacker to disclose information over a network.
Affected productsWindows 11 version 26H1 for x64-based Systems, Windows Server 2012, Windows Server 2012 (Server Core installation), Windows Server 2012 R2
Fixed versions10.0.28000.3231, 6.2.9200.26434, 6.3.9600.23470, 10.0.14393.9612
Vendor guidance
Install KB5127646. Install KB5126835. Install KB5126836. Install KB5126868. Install KB5126651. Install KB5126657. Install KB5126655. Install KB5126653. Install KB5127648. Install KB5126646.
Microsoft Security Response CenterCVE-2026-96245
HighCVSS 7.5
Windows Routing and Remote Access Service (RRAS) Information Disclosure Vulnerability
Out-of-bounds read in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to disclose information over a network.
Affected productsWindows Server 2012, Windows Server 2012 (Server Core installation), Windows Server 2012 R2, Windows Server 2012 R2 (Server Core installation)
Fixed versions6.2.9200.26434, 6.3.9600.23470, 10.0.14393.9612, 10.0.17763.9376
Vendor guidance
Install KB5126835. Install KB5126836. Install KB5126868. Install KB5126651. Install KB5126657. Install KB5126655. Install KB5126653. Install KB5127648. Install KB5126646. Install KB5127646.
Microsoft Security Response CenterCVE-2026-96243
HighCVSS 7.8
Windows WalletService Elevation of Privilege Vulnerability
Improper link resolution before file access ('link following') in Windows WalletService allows an authorized attacker to elevate privileges locally.
Affected productsWindows 10 Version 1607 for 32-bit Systems, Windows 10 Version 1607 for x64-based Systems, Windows Server 2016, Windows Server 2016 (Server Core installation)
Fixed versions10.0.14393.9612, 10.0.17763.9376, 10.0.19044.7807, 10.0.19045.7807
Vendor guidance
Install KB5126868. Install KB5126651. Install KB5126657. Install KB5126655. Install KB5126653. Install KB5127648. Install KB5127646. Install KB5126646.
Microsoft Security Response CenterCVE-2026-96230
HighCVSS 8.8
ASP.NET Core Remote Code Execution Vulnerability
Improper neutralization of input during web page generation ('cross-site scripting') in ASP.NET Core allows an unauthorized attacker to execute code over a network.
Affected productsMicrosoft.AspNetCore.Components.WebAssembly.Server on .NET 10.0 runtime installed on Windows, Microsoft.AspNetCore.Components.WebAssembly.Server on .NET 10.0 runtime installed on Linux, Microsoft.AspNetCore.Components.WebAssembly.Server on .NET 10.0 runtime installed on Mac OS, Microsoft.AspNetCore.Components.WebAssembly.Server on .NET 11.0 runtime installed on Windows
Fixed versions10.0.13, 11.0.0-rc.2, 8.0.32, 9.0.21
Vendor guidance
Release Notes
Microsoft Security Response CenterCVE-2026-96229
HighCVSS 6.5
.NET Information Disclosure Vulnerability
Permissive list of allowed inputs in .NET allows an unauthorized attacker to disclose information over a network.
Affected productsMicrosoft Visual Studio 2026 version 18.10, Microsoft Visual Studio 2022 version 17.14, .NET 11.0 runtime installed on Windows, .NET 8.0 runtime installed on Windows
Fixed versions18.10.4, 17.14.42, 11.0.0-rc.2, 8.0.32
Vendor guidance
Release Notes Install KB5130034. Install KB5130035. Install KB5130036.
Microsoft Security Response CenterCVE-2026-96223
HighCVSS 7.8
Windows Hyper-V Elevation of Privilege Vulnerability
Use after free in Windows Hyper-V allows an authorized attacker to elevate privileges locally.
Affected productsWindows 11 Version 26H2 for ARM64-based Systems, Windows 11 Version 26H2 for x64-based Systems, Windows Server 2025 (Server Core installation), Windows 11 Version 25H2 for ARM64-based Systems
Fixed versions10.0.26300.9711, 10.0.26100.33650, 10.0.26200.9711, 10.0.26100.9711
Vendor guidance
Install KB5127648. Install KB5126646. Install KB5127646.
Microsoft Security Response CenterCVE-2026-96220
HighCVSS 7.8
Windows Assigned Access Elevation of Privilege Vulnerability
Improper control of generation of code ('code injection') in Windows Assigned Access allows an authorized attacker to elevate privileges locally.
Affected productsWindows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows 10 Version 21H2 for 32-bit Systems, Windows 10 Version 21H2 for ARM64-based Systems
Fixed versions10.0.17763.9376, 10.0.19044.7807, 10.0.19045.7807, 10.0.22631.7652
Vendor guidance
Install KB5126651. Install KB5126657. Install KB5126653. Install KB5127648. Install KB5127646.
Microsoft Security Response CenterCVE-2026-96219
HighCVSS 9.8
Windows Local Security Authority Subsystem Service (LSASS) Remote Code Execution Vulnerability
Out-of-bounds write in Windows Local Security Authority Subsystem Service (LSASS) allows an unauthorized attacker to execute code over a network.
Affected productsWindows 11 Version 26H1 for ARM64-based Systems, Windows 11 version 26H1 for x64-based Systems, Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems
Fixed versions10.0.28000.3231, 10.0.17763.9376, 10.0.19044.7807, 10.0.19045.7807
Vendor guidance
Install KB5127646. Install KB5126651. Install KB5126657. Install KB5126655. Install KB5126653. Install KB5127648. Install KB5126646.
Microsoft Security Response CenterCVE-2026-96218
HighCVSS 5.5
Windows Update Stack Tampering Vulnerability
Improper access control in Windows Update Stack allows an authorized attacker to perform tampering locally.
Affected productsWindows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019, Windows Server 2019 (Server Core installation)
Fixed versions10.0.17763.9376, 10.0.19044.7807, 10.0.19045.7807, 10.0.20348.5761
Vendor guidance
Install KB5126651. Install KB5126657. Install KB5126655. Install KB5126653. Install KB5127648. Install KB5126646. Install KB5127646.
Microsoft Security Response CenterCVE-2026-96217
HighCVSS 7.8
Windows NTFS Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows NTFS allows an authorized attacker to elevate privileges locally.
Affected productsWindows 10 Version 21H2 for ARM64-based Systems, Windows 10 Version 21H2 for x64-based Systems, Windows 10 Version 22H2 for 32-bit Systems, Windows 10 Version 22H2 for ARM64-based Systems
Fixed versions10.0.19044.7807, 10.0.19045.7807, 10.0.20348.5761, 10.0.22631.7652
Vendor guidance
Install KB5126657. Install KB5126655. Install KB5126653. Install KB5127648. Install KB5126646. Install KB5127646. Install KB5126835. Install KB5126836. Install KB5126868. Install KB5126651.
Microsoft Security Response CenterCVE-2026-96216
HighCVSS 7.0
Windows Kernel Elevation of Privilege Vulnerability
Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
Affected productsWindows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019, Windows Server 2019 (Server Core installation)
Fixed versions10.0.17763.9376, 10.0.19044.7807, 10.0.19045.7807, 10.0.20348.5761
Vendor guidance
Install KB5126651. Install KB5126657. Install KB5126655. Install KB5126653. Install KB5127648. Install KB5126646. Install KB5127646.
Before you act
Start with the vendor's bulletin.
We normalize the fields that vendors publish so you can search and compare advisories in one place. We do not replace the original bulletin or turn a product-name match into proof that a system is vulnerable.
Confirm the installed product and version, read the linked vendor guidance, and test the recommended update or mitigation through your normal change process.