Vendor advisories

Microsoft Security Response Center

Browse 17,903 advisories from this official source. Search by product, CVE, severity, or advisory ID.

Current Checked 53 minutes ago Checked every 6 hours

17,903 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.

RSS for these results
Microsoft Security Response CenterCVE-2026-27908
HighCVSS 7.0

Windows TDI Translation Driver (tdx.sys) Elevation of Privilege Vulnerability

Use after free in Windows TDI Translation Driver (tdx.sys) allows an authorized attacker to elevate privileges locally.

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 versions10.0.28000.1836, 10.0.17763.8644, 10.0.20348.5020, 10.0.19044.7184
Vendor guidance

Install KB5083768. Install KB5082123. Install KB5082142. Install KB5082200. Install KB5082063. Install KB5083769. Install KB5082052. Install KB5082060. Install KB5082198. Install KB5082127. Install KB5082126.

Microsoft Security Response CenterCVE-2026-27907
HighCVSS 7.8

Windows Storage Spaces Controller Elevation of Privilege Vulnerability

Integer underflow (wrap or wraparound) in Windows Storage Spaces Controller allows an authorized attacker to elevate privileges locally.

Affected productsWindows Server 2025 (Server Core installation), Windows 11 Version 25H2 for ARM64-based Systems, Windows 11 Version 25H2 for x64-based Systems, Windows 11 Version 23H2 for ARM64-based Systems
Fixed versions10.0.26100.32690, 10.0.26200.8246, 10.0.22631.6936, 10.0.25398.2274
Vendor guidance

Install KB5082063. Install KB5083769. Install KB5082052. Install KB5082060. Install KB5083768.

Microsoft Security Response CenterCVE-2026-27906
HighCVSS 4.4

Windows Hello Security Feature Bypass Vulnerability

Improper input validation in Windows Hello allows an authorized attacker to bypass a security feature 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 x64-based Systems
Fixed versions10.0.19044.7184, 10.0.19045.7184, 10.0.26200.8246, 10.0.22631.6936
Vendor guidance

Install KB5082200. Install KB5083769. Install KB5082052. Install KB5083768.

Microsoft Security Response CenterCVE-2026-26184
HighCVSS 7.8

Windows Projected File System Elevation of Privilege Vulnerability

Buffer over-read in Windows Projected File System allows an authorized attacker to elevate privileges locally.

Affected productsWindows 11 Version 26H1 for ARM64-based Systems, Windows 11 version 26H1 for x64-based Systems, Windows Server 2019, Windows 10 Version 1809 for x64-based Systems
Fixed versions10.0.28000.1836, 10.0.17763.8644, 10.0.20348.5020, 10.0.19044.7184
Vendor guidance

Install KB5083768. Install KB5082123. Install KB5082142. Install KB5082200. Install KB5082063. Install KB5083769. Install KB5082052. Install KB5082060.

Microsoft Security Response CenterCVE-2026-26183
HighCVSS 7.8

Remote Access Management service/API (RPC server) Elevation of Privilege Vulnerability

Improper access control in Windows RPC API allows an authorized attacker to elevate privileges locally.

Affected productsWindows Server 2019, Windows Server 2019 (Server Core installation), Windows Server 2022, Windows Server 2022 (Server Core installation)
Fixed versions10.0.17763.8644, 10.0.20348.5020, 10.0.26100.32690, 10.0.25398.2274
Vendor guidance

Install KB5082123. Install KB5082142. Install KB5082063. Install KB5082060. Install KB5082198. Install KB5082127. Install KB5082126.

Microsoft Security Response CenterCVE-2026-26182
HighCVSS 7.0

Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability

Use after free in Windows Ancillary Function Driver for WinSock 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 versions10.0.17763.8644, 10.0.20348.5020, 10.0.19044.7184, 10.0.19045.7184
Vendor guidance

Install KB5082123. Install KB5082142. Install KB5082200. Install KB5082063. Install KB5083769. Install KB5082052. Install KB5082060. Install KB5082198. Install KB5082127. Install KB5082126. Install KB5083768.

Microsoft Security Response CenterCVE-2026-26181
HighCVSS 7.8

Microsoft Brokering File System Elevation of Privilege Vulnerability

Use after free in Microsoft Brokering File System allows an authorized attacker to elevate privileges locally.

Affected productsWindows Server 2025 (Server Core installation), Windows 11 Version 25H2 for ARM64-based Systems, Windows 11 Version 25H2 for x64-based Systems, Windows 11 Version 23H2 for ARM64-based Systems
Fixed versions10.0.26100.32690, 10.0.26200.8246, 10.0.22631.6936, 10.0.25398.2274
Vendor guidance

Install KB5082063. Install KB5083769. Install KB5082052. Install KB5082060. Install KB5083768.

Microsoft Security Response CenterCVE-2026-26180
HighCVSS 7.8

Windows Kernel Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.

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 versions10.0.28000.1836, 10.0.17763.8644, 10.0.20348.5020, 10.0.19044.7184
Vendor guidance

Install KB5083768. Install KB5082123. Install KB5082142. Install KB5082200. Install KB5082063. Install KB5083769. Install KB5082052. Install KB5082060. Install KB5082198. Install KB5082127. Install KB5082126.

Microsoft Security Response CenterCVE-2026-26179
HighCVSS 7.8

Windows Kernel Elevation of Privilege Vulnerability

Double free in Windows Kernel allows an authorized attacker to elevate privileges locally.

Affected productsWindows Server 2025 (Server Core installation), Windows 11 Version 25H2 for ARM64-based Systems, Windows 11 Version 25H2 for x64-based Systems, Windows 11 Version 23H2 for ARM64-based Systems
Fixed versions10.0.26100.32690, 10.0.26200.8246, 10.0.22631.6936, 10.0.25398.2274
Vendor guidance

Install KB5082063. Install KB5083769. Install KB5082052. Install KB5082060. Install KB5083768.

Microsoft Security Response CenterCVE-2026-26178
HighCVSS 8.8

Windows Advanced Rasterization Platform Elevation of Privilege Vulnerability

Integer size truncation in Windows Advanced Rasterization Platform (WARP) allows an unauthorized 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 versions10.0.17763.8644, 10.0.20348.5020, 10.0.19044.7184, 10.0.19045.7184
Vendor guidance

Install KB5082123. Install KB5082142. Install KB5082200. Install KB5082063. Install KB5083769. Install KB5082052. Install KB5082060. Install KB5082198.

Microsoft Security Response CenterCVE-2026-26177
HighCVSS 7.0

Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability

Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

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 versions10.0.28000.1836, 10.0.17763.8644, 10.0.20348.5020, 10.0.19044.7184
Vendor guidance

Install KB5083768. Install KB5082123. Install KB5082142. Install KB5082200. Install KB5082063. Install KB5083769. Install KB5082052. Install KB5082060. Install KB5082198. Install KB5082127. Install KB5082126.

Microsoft Security Response CenterCVE-2026-26176
HighCVSS 7.8

Windows Client Side Caching driver (csc.sys) Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows Client Side Caching driver (csc.sys) 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 versions10.0.17763.8644, 10.0.20348.5020, 10.0.19044.7184, 10.0.19045.7184
Vendor guidance

Install KB5082123. Install KB5082142. Install KB5082200. Install KB5082063. Install KB5083769. Install KB5082052. Install KB5082060. Install KB5082198. Install KB5082127. Install KB5082126. Install KB5083768.

Microsoft Security Response CenterCVE-2026-26175
HighCVSS 4.6

Windows Boot Manager Security Feature Bypass Vulnerability

Use of uninitialized resource in Windows Boot Manager allows an unauthorized attacker to bypass a security feature with a physical attack.

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 versions10.0.28000.1836, 10.0.17763.8644, 10.0.20348.5020, 10.0.19044.7184
Vendor guidance

Install KB5083768. Install KB5082123. Install KB5082142. Install KB5082200. Install KB5082063. Install KB5083769. Install KB5082052. Install KB5082060. Install KB5082198.

Microsoft Security Response CenterCVE-2026-26173
HighCVSS 7.0

Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

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 versions10.0.28000.1836, 10.0.17763.8644, 10.0.20348.5020, 10.0.19044.7184
Vendor guidance

Install KB5083768. Install KB5082123. Install KB5082142. Install KB5082200. Install KB5082063. Install KB5083769. Install KB5082052. Install KB5082060. Install KB5082198. Install KB5082127. Install KB5082126.

Microsoft Security Response CenterCVE-2026-26172
HighCVSS 7.8

Windows Push Notifications Elevation of Privilege Vulnerability

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Push Notifications allows an authorized attacker to elevate privileges locally.

Affected productsWindows Server 2022, Windows Server 2022 (Server Core installation), Windows 10 Version 21H2 for 32-bit Systems, Windows 10 Version 21H2 for ARM64-based Systems
Fixed versions10.0.20348.5020, 10.0.19044.7184, 10.0.19045.7184, 10.0.26100.32690
Vendor guidance

Install KB5082142. Install KB5082200. Install KB5082063. Install KB5083769. Install KB5082052. Install KB5082060. Install KB5083768.

Microsoft Security Response CenterCVE-2026-26170
HighCVSS 7.8

PowerShell Elevation of Privilege Vulnerability

Improper input validation in Microsoft PowerShell allows an authorized attacker to elevate privileges locally.

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 versions10.0.28000.1836, 10.0.17763.8644, 10.0.20348.5020, 10.0.19044.7184
Vendor guidance

Install KB5083768. Install KB5082123. Install KB5082142. Install KB5082200. Install KB5082063. Install KB5083769. Install KB5082052. Install KB5082060. Install KB5082198.

Microsoft Security Response CenterCVE-2026-26169
HighCVSS 6.1

Windows Kernel Memory Information Disclosure Vulnerability

Buffer over-read in Windows Kernel Memory allows an authorized attacker to disclose information locally.

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 versions10.0.28000.1836, 10.0.17763.8644, 10.0.20348.5020, 10.0.19044.7184
Vendor guidance

Install KB5083768. Install KB5082123. Install KB5082142. Install KB5082200. Install KB5082063. Install KB5083769. Install KB5082052. Install KB5082060. Install KB5082198.

Microsoft Security Response CenterCVE-2026-26167
HighCVSS 8.8

Windows Push Notifications Elevation of Privilege Vulnerability

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Push Notifications allows an authorized attacker to elevate privileges locally.

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 versions10.0.28000.1836, 10.0.17763.8644, 10.0.20348.5020, 10.0.19044.7184
Vendor guidance

Install KB5083768. Install KB5082123. Install KB5082142. Install KB5082200. Install KB5082063. Install KB5083769. Install KB5082052. Install KB5082060. Install KB5082198.

Microsoft Security Response CenterCVE-2026-26166
HighCVSS 7.0

Windows Shell Elevation of Privilege Vulnerability

Double free in Windows Shell allows an authorized attacker to elevate privileges locally.

Affected productsWindows Server 2022, Windows Server 2022 (Server Core installation), Windows Server 2025 (Server Core installation), Windows 11 Version 25H2 for ARM64-based Systems
Fixed versions10.0.20348.5020, 10.0.26100.32690, 10.0.26200.8246, 10.0.22631.6936
Vendor guidance

Install KB5082142. Install KB5082063. Install KB5083769. Install KB5082052. Install KB5082060. Install KB5083768.

Microsoft Security Response CenterCVE-2026-26165
HighCVSS 7.0

Windows Shell Elevation of Privilege Vulnerability

Use after free in Windows Shell allows an authorized attacker to elevate privileges locally.

Affected productsWindows 11 Version 26H1 for ARM64-based Systems, Windows 11 version 26H1 for x64-based Systems, Windows Server 2022, Windows Server 2022 (Server Core installation)
Fixed versions10.0.28000.1836, 10.0.20348.5020, 10.0.26100.32690, 10.0.26200.8246
Vendor guidance

Install KB5083768. Install KB5082142. Install KB5082063. Install KB5083769. Install KB5082052. Install KB5082060.

Microsoft Security Response CenterCVE-2026-26163
HighCVSS 7.8

Windows Kernel Elevation of Privilege Vulnerability

Double free in Windows Kernel allows an authorized attacker to elevate privileges locally.

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 versions10.0.28000.1836, 10.0.17763.8644, 10.0.20348.5020, 10.0.19044.7184
Vendor guidance

Install KB5083768. Install KB5082123. Install KB5082142. Install KB5082200. Install KB5082063. Install KB5083769. Install KB5082052. Install KB5082060. Install KB5082198. Install KB5082126.

Microsoft Security Response CenterCVE-2026-26162
HighCVSS 7.8

Windows OLE Elevation of Privilege Vulnerability

Access of resource using incompatible type ('type confusion') in Windows OLE allows an authorized attacker to elevate privileges locally.

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 versions10.0.28000.1836, 10.0.17763.8644, 10.0.20348.5020, 10.0.19044.7184
Vendor guidance

Install KB5083768. Install KB5082123. Install KB5082142. Install KB5082200. Install KB5082063. Install KB5083769. Install KB5082052. Install KB5082060. Install KB5082198. Install KB5082127. Install KB5082126.

Microsoft Security Response CenterCVE-2026-26161
HighCVSS 7.8

Windows Sensor Data Service Elevation of Privilege Vulnerability

Untrusted pointer dereference in Windows Sensor Data Service 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 versions10.0.17763.8644, 10.0.20348.5020, 10.0.19044.7184, 10.0.19045.7184
Vendor guidance

Install KB5082123. Install KB5082142. Install KB5082200. Install KB5082063. Install KB5083769. Install KB5082052. Install KB5082060. Install KB5083768.

Microsoft Security Response CenterCVE-2026-26156
HighCVSS 7.8

Windows Hyper-V Remote Code Execution Vulnerability

Heap-based buffer overflow in Windows Hyper-V allows an unauthorized attacker to execute code locally.

Affected productsWindows 11 Version 26H1 for ARM64-based Systems, Windows 11 version 26H1 for x64-based Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019
Fixed versions10.0.28000.1836, 10.0.17763.8644, 10.0.20348.5020, 10.0.19044.7184
Vendor guidance

Install KB5083768. Install KB5082123. Install KB5082142. Install KB5082200. Install KB5082063. Install KB5083769. Install KB5082052. Install KB5082060. Install KB5082198.

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.

How we check our sources