Vendor advisories

Microsoft Security Response Center

Browse 15,977 advisories from this official source. Search by product, CVE, severity, or advisory ID.

Current Checked 4 hours ago Checked every 6 hours

15,977 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-2026-45592
HighCVSS 7.8

Windows Internet (wininet.dll) Elevation of Privilege Vulnerability

Integer overflow or wraparound in Windows Internet (wininet.dll) 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 versions10.0.17763.8880, 10.0.20348.5256, 10.0.19044.7417, 10.0.19045.7417
Vendor guidance

Install KB5094123. Install KB5094128. Install KB5094127. Install KB5094125. Install KB5094126. Install KB5093998. Install KB5095051. Install KB5094122. Install KB5094041. Install KB5094006.

Microsoft Security Response CenterCVE-2026-50461
HighCVSS 7.8

Windows NTFS Remote Code Execution Vulnerability

Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to execute code 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 versions10.0.17763.9020, 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 KB5101649. Install KB5099535. Install KB5099445. Install KB5099444.

Microsoft Security Response CenterCVE-2026-50342
HighCVSS 8.8

Windows MIDI Service Module Elevation of Privileges Vulnerability

Improper access control in Windows MIDI Service Module allows an authorized attacker to elevate privileges locally.

Affected productsWindows 11 Version 25H2 for ARM64-based Systems, Windows 11 Version 25H2 for x64-based Systems, Windows 11 Version 24H2 for ARM64-based Systems, Windows 11 Version 24H2 for x64-based Systems
Fixed versions10.0.26200.8875, 10.0.26100.8875, 10.0.28000.2525
Vendor guidance

Install KB5101650. Install KB5101649.

Microsoft Security Response CenterCVE-2026-50309
HighCVSS 7.8

Windows NTFS Remote Code Execution Vulnerability

Heap-based buffer overflow in Windows NTFS allows an authorized attacker to execute code 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 versions10.0.17763.9020, 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 KB5101649. Install KB5099535. Install KB5099445. Install KB5099444.

Microsoft Security Response CenterCVE-2026-50298
HighCVSS 6.8

Windows Spaceport.sys Elevation of Privilege Vulnerability

Integer overflow or wraparound in Windows Spaceport.sys allows an unauthorized attacker to elevate privileges with a physical attack.

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 KB5101649. Install KB5099535. Install KB5099445. Install KB5099444.

Microsoft Security Response CenterCVE-2026-62898
HighCVSS 7.5

Microsoft QUIC Information Disclosure Vulnerability

Use after free in Microsoft QUIC allows an unauthorized attacker to disclose information over a network.

Affected products.NET 10.0 runtime installed on Windows, Microsoft Visual Studio 2022 version 17.14, Microsoft Visual Studio 2026 version 18.8, .NET 9.0 runtime installed on Windows
Fixed versions10.0.11, 17.14.38, 18.8.3, 9.0.19
Vendor guidance

Install KB5122106. Install KB5122105. Install KB5122104.

Microsoft Security Response CenterCVE-2026-70354
HighCVSS 7.8

.NET Core Remote Code Execution Vulnerability

Out-of-bounds write in .NET allows an unauthorized attacker to execute code locally.

Affected productsMicrosoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows 10 Version 1607 for 32-bit Systems, Microsoft .NET Framework 3.5 on Windows Server 2012, Microsoft .NET Framework 3.5 on Windows Server 2012 (Server Core installation), Microsoft .NET Framework 3.5 on Windows 11 Version 26H1 for ARM64-based Systems
Fixed versions2.0.50727.8984 & 3.0.30729.8980 & 4.7.4144.0, 2.0.50727.8984 & 3.0.30729.8980, 2.0.50727.9183 & 3.0.30729.9169, 2.0.50727.9070 & 3.0.30729.9068 & 4.8.4805.0
Vendor guidance

Install KB5120418. Install KB5120716. Install KB5120747. Install KB5120695. Install KB5120703. Install KB5120698. Install KB5120701. Install KB5120705. Install KB5120709. Install KB5120714. Install KB5120700. Install ...

Microsoft Security Response CenterCVE-2026-64906
HighCVSS 7.8

Microsoft Access Remote Code Execution Vulnerability

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

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 versionshttps://aka.ms/OfficeSecurityReleases, 16.0.5565.1000
Vendor guidance

Click to Run Install KB5002832.

Microsoft Security Response CenterCVE-2026-62902
HighCVSS 6.5

.NET Information Disclosure Vulnerability

Inclusion of functionality from untrusted control sphere in .NET allows an unauthorized attacker to disclose information over a network.

Affected products.NET 8.0 runtime installed on Windows, .NET 9.0 runtime installed on Windows, Microsoft Visual Studio 2022 version 17.14, Microsoft Visual Studio 2026 version 18.8
Fixed versions8.0.30, 9.0.19, 17.14.38, 18.8.3
Vendor guidance

Install KB5122104. Install KB5122105.

Microsoft Security Response CenterCVE-2026-62897
HighCVSS 7.0

.NET Framework Remote Code Execution Vulnerability

Integer overflow or wraparound in .NET Framework allows an unauthorized attacker to execute code locally.

Affected productsMicrosoft .NET Framework 4.8.1 on Windows 11 Version 26H1 for ARM64-based Systems, Microsoft .NET Framework 3.5 on Windows 11 Version 26H1 for ARM64-based Systems, Microsoft .NET Framework 4.8.1 on Windows 11 version 26H1 for x64-based Systems, .NET 10.0 runtime installed on Windows
Fixed versions4.8.9344.0, 2.0.50727.9183 & 3.0.30729.9169, 10.0.11, 8.0.30
Vendor guidance

Install KB5120711. Install KB5120747. Install KB5122106. Install KB5122104. Install KB5122105. Install KB5120703. Install KB5120698.

Microsoft Security Response CenterCVE-2026-62695
HighCVSS 7.8

Windows Storage Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows Storage 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 versions10.0.20348.5499, 10.0.20348.5440, 10.0.26100.33296, 10.0.26100.33222
Vendor guidance

Install KB5120242. Install KB5120229. Install KB5120233. Install KB5120228. Install KB5121003. Install KB5120994. Install KB5120240. Install KB5121000.

Microsoft Security Response CenterCVE-2026-61346
Severity not listedCVSS 7.0

Windows Graphics Kernel Elevation of Privilege Vulnerability

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

Vendor guidance

Install KB5120238. Install KB5120242. Install KB5120229. Install KB5120249. Install KB5120233. Install KB5120228. Install KB5121003. Install KB5120994. Install KB5120240. Install KB5121000.

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.

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