Vendor advisories

Microsoft Security Response Center

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

Current Checked 4 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.

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Microsoft Security Response CenterCVE-2026-97776
CriticalCVSS 8.8

Microsoft Office Excel Remote Code Execution Vulnerability

Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.

Affected productsMicrosoft Office LTSC 2021 for 64-bit editions, Microsoft Office LTSC 2021 for 32-bit editions, Microsoft Office LTSC 2024 for 64-bit editions, Microsoft Office LTSC 2024 for 32-bit editions
Fixed versions16.0.14334.20974, 16.0.17932.21056, https://aka.ms/OfficeSecurityReleases, 16.114.26101123
Vendor guidance

Release Notes Install KB5002928.

Microsoft Security Response CenterCVE-2026-96222
CriticalCVSS 7.4

Active Directory Federation Services (AD FS) Spoofing Vulnerability

Improper certificate validation in Active Directory Federation Services (AD FS) allows an unauthorized attacker to perform spoofing over a network.

Affected productsSystem.Security.Cryptography.Xml on .NET 8.0 runtime installed on Windows, System.Security.Cryptography.Xml on .NET 8.0 runtime installed on Linux, System.Security.Cryptography.Xml on .NET 8.0 runtime installed on Mac OS, Windows 10 Version 1809 for 32-bit Systems
Fixed versions8.0.5, 10.0.17763.9376, 10.0.20348.5761, 10.0.26100.33650
Vendor guidance

Release Notes Install KB5126651. Install KB5126655. Install KB5126646. Install KB5126868. Install KB5126836. Install KB5127689. Install KB5127690. Install KB5127691. Install KB5127692. Install KB5127693. Install KB512...

Microsoft Security Response CenterCVE-2026-108471
CriticalCVSS 8.8

Windows Virtualization-Based Security (VBS) Enclave Elevation of Privilege Vulnerability

Untrusted pointer dereference in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to elevate privileges locally.

Affected productsWindows Server 2019, Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019 (Server Core installation)
Fixed versions10.0.17763.9376
Vendor guidance

Install KB5126651.

Microsoft Security Response CenterCVE-2026-108131
CriticalCVSS 7.5

Active Directory Federation Services (AD FS) Spoofing Vulnerability

No cwe for this issue 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 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.

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