Vendor advisories

Microsoft Security Response Center

Browse 15,859 advisories from this official source. Search by product, CVE, severity, or advisory ID.

Current Checked 5 hours ago Checked every 6 hours

15,859 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-2026-70186
HighCVSS 7.5

ASP.NET Core Denial of Service Vulnerability

Deadlock in ASP.NET Core allows an unauthorized attacker to deny service over a network.

Affected productsMicrosoft Visual Studio 2026 version 18.10, Microsoft Visual Studio 2022 version 17.14, ASP.NET Core 10.0, ASP.NET Core 8.0
Fixed versions18.10.4, 17.14.42, 10.0.13, 8.0.32
Vendor guidance

Release Notes Install KB5130036. Install KB5130034. Install KB5130035.

Microsoft Security Response CenterCVE-2026-70181
HighCVSS 7.5

ASP.NET Core Denial of Service Vulnerability

Allocation of resources without limits or throttling in ASP.NET Core allows an unauthorized attacker to deny service over a network.

Affected productsASP.NET Core 10.0, ASP.NET Core 8.0, ASP.NET Core 9.0, Microsoft Visual Studio 2026 version 18.10
Fixed versions10.0.13, 8.0.32, 9.0.21, 18.10.4
Vendor guidance

Release Notes Install KB5130036. Install KB5130034. Install KB5130035.

Microsoft Security Response CenterCVE-2026-70170
HighCVSS 6.5

Windows Kernel Denial of Service Vulnerability

Untrusted pointer dereference in Windows Kernel allows an authorized 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 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems
Fixed versions10.0.26300.9711, 10.0.17763.9376, 10.0.20348.5761, 10.0.19044.7807
Vendor guidance

Install KB5127648. Install KB5126651. Install KB5126655. Install KB5126657. Install KB5126646. Install KB5126653. Install KB5127646. Install KB5126868. Install KB5126835. Install KB5126836.

Microsoft Security Response CenterCVE-2026-70162
HighCVSS 5.9

.NET Denial of Service Vulnerability

A denial of service vulnerability exists when Microsoft Common Object Runtime Library improperly handles web requests. An attacker who successfully exploited this vulnerability could cause a denial of service against a .NET web application. A remote unauthenticated attacker co...

Affected productsSystem.Security.Cryptography.Pkcs on .NET 10.0 runtime installed on Windows, System.Security.Cryptography.Pkcs on .NET 11.0 runtime installed on Windows, System.Security.Cryptography.Pkcs on .NET 8.0 runtime installed on Windows, System.Security.Cryptography.Pkcs on .NET 9.0 runtime installed on Windows
Fixed versions10.0.13, 11.0.0-rc.2, 8.0.2, 9.0.21
Vendor guidance

Release Notes

Microsoft Security Response CenterCVE-2026-70056
HighCVSS 7.0

Windows Update Service Elevation of Privilege Vulnerability

Use after free in Windows Update 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 versions10.0.17763.9376, 10.0.20348.5761, 10.0.19044.7807, 10.0.19045.7807
Vendor guidance

Install KB5126651. Install KB5126655. Install KB5126657. Install KB5126646. Install KB5127648. Install KB5126653. Install KB5127646.

Microsoft Security Response CenterCVE-2026-70031
HighCVSS 7.5

Windows iSCSI Denial of Service Vulnerability

Heap-based buffer overflow in Windows iSCSI allows an unauthorized attacker to deny service 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-2026-70013
HighCVSS 8.1

Windows iSCSI Remote Code Execution Vulnerability

Use after free in Windows iSCSI allows an unauthorized attacker to execute code over a network.

Affected productsWindows 11 Version 24H2 for ARM64-based Systems, Windows 11 Version 23H2 for ARM64-based Systems, Windows 10 Version 21H2 for ARM64-based Systems, Windows 11 Version 23H2 for x64-based Systems
Fixed versions10.0.26100.9711, 10.0.22631.7652, 10.0.19044.7807, 10.0.26200.9711
Vendor guidance

Install KB5127648. Install KB5126653. Install KB5126657. Install KB5126646. Install KB5127646. Install KB5126835. Install KB5126836. Install KB5126868. Install KB5126651. Install KB5126655.

Microsoft Security Response CenterCVE-2026-108465
HighCVSS 7.0

Windows Update Delivery Optimization Elevation of Privilege Vulnerability

Use after free in Windows Update Delivery Optimization 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.

Microsoft Security Response CenterCVE-2026-103572
HighCVSS 8.8

Visual Studio Tools for Applications and SQL Server Management Studio Remote Code Execution Vulnerability

Improper control of generation of code ('code injection') in Visual Studio Tools for Applications and SQL Server Management Studio allows an unauthorized attacker to execute code over a network.

Affected productsMicrosoft Visual Studio 2026 version 18.10, Microsoft Visual Studio 2022 version 17.14
Fixed versions18.10.4, 17.14.42
Vendor guidance

Release Notes

Microsoft Security Response CenterCVE-2026-50696
HighCVSS 7.5

Internet Key Exchange (IKE) Protocol Denial of Service Vulnerability

Heap-based buffer overflow in Windows Internet Key Exchange (IKE) Protocol allows an unauthorized attacker to deny service over a network.

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 versions10.0.17763.9020, 10.0.20348.5386, 10.0.19044.7548, 10.0.19045.7548
Vendor guidance

Install KB5099538. Install KB5099540. Install KB5099539. Install KB5099536. Install KB5101650. Install KB5099414. Install KB5101649.

Microsoft Security Response CenterCVE-2026-81396
HighCVSS 7.8

Microsoft Excel Remote Code Execution Vulnerability

Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

Affected productsMicrosoft Office 365 for Mac, Office Online Server, Microsoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions
Fixed versions16.112.26083020, 16.0.10417.20207, 16.0.20326.20138, 16.0.14334.20906
Vendor guidance

Release Notes Install KB5002910. Install KB5002914. Install KB5002904.

Microsoft Security Response CenterCVE-2026-78524
HighCVSS 8.8

Microsoft Office Remote Code Execution Vulnerability

Out-of-bounds write in Microsoft Office allows an unauthorized attacker to execute code over a network.

Affected productsMicrosoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems
Fixed versions16.0.10417.20207, 16.0.20326.20138, 16.112.26090911, 16.0.14334.20906
Vendor guidance

Release Notes Install KB5002916.

Microsoft Security Response CenterCVE-2026-71339
HighCVSS 6.7

Windows Installer Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows Installer 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 versions10.0.17763.9245, 10.0.20348.5622, 10.0.19044.7725, 10.0.19045.7725
Vendor guidance

Install KB5122876. Install KB5122882. Install KB5122878. Install KB5122871. Install KB5124008. Install KB5122880. Install KB5124012. Install KB5123099. Install KB5123065. Install KB5123066.

Microsoft Security Response CenterCVE-2026-70583
HighCVSS 7.8

Windows Core Messaging Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows Core Messaging 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 versions10.0.17763.9245, 10.0.20348.5622, 10.0.19044.7725, 10.0.19045.7725
Vendor guidance

Install KB5122876. Install KB5122882. Install KB5122878. Install KB5122871. Install KB5124008. Install KB5122880. Install KB5124012. Install KB5123099.

Microsoft Security Response CenterCVE-2026-69283
HighCVSS 7.8

Windows CD-ROM Driver Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows CD-ROM Driver 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 versions10.0.17763.9245, 10.0.20348.5622, 10.0.19044.7725, 10.0.19045.7725
Vendor guidance

Install KB5122876. Install KB5122882. Install KB5122878. Install KB5122871. Install KB5124008. Install KB5122880. Install KB5124012. Install KB5123099. Install KB5123065. Install KB5123066.

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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.

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