GIVE YOUR AGENT THE EVIDENCE

Set up in your agent.

One prompt to get started. Paste it into your coding agent to connect cve.new through MCP and bring vulnerability context into your workflow.

Your agent needs remote MCP support and access to https://cve.new/mcp.

Read the setup guide

GIVE YOUR AGENT THE EVIDENCE

Investigate in your agent.

Turn this advisory into a focused investigation. Ask your agent to check your project’s versions, explain the evidence, and suggest a compatible fix.

Your agent needs remote MCP support and access to https://cve.new/mcp.

Read the setup guide

cve.new
Check your stack
CVE-2026-96222high7.4

Active Directory Federation Services (AD FS) Spoofing Vulnerability

Impact

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

Source excerpt · microsoft

Affected packages

This source has no supported package-version data for matching. You can read the advisory here, but this record alone cannot power a dependency check.

Affected products

Vendor version evidence. Product records are separate from automatic dependency matching.

Microsoft · Microsoft .NET Framework 3.5

Platforms: Windows 11 version 26H1, Windows Server 2012, Windows Server 2012 R2

Version / rangeSource status
3.5.0 to before 2.0.50727.9188 AND 3.0.30729.9171affected
microsoft version evidence

Microsoft · Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2

Platforms: Windows 10 version 1607, Windows Server 2016, Windows Server 2019

Version / rangeSource status
3.0.0.0 to before 2.0.50727.8987 AND 3.0.30729.8982 AND 4.7.4150.0affected
microsoft version evidence

Microsoft · Microsoft .NET Framework 3.5 AND 4.7.2

Platforms: Windows 10 version 1809

Version / rangeSource status
4.7.0 to before 2.0.50727.9073 AND 3.0.30729.9070 AND 4.7.4150.0affected
microsoft version evidence

Microsoft · Microsoft .NET Framework 3.5 AND 4.8

Platforms: Windows 10 version 1809, Windows 10 version 21H2, Windows 10 version 22H2, Windows Server 2019, Windows Server 2022

Version / rangeSource status
4.8.0 to before 2.0.50727.9073 AND 3.0.30729.9070 AND 4.8.4811.0affected
microsoft version evidence

Microsoft · Microsoft .NET Framework 3.5 AND 4.8.1

Platforms: Windows 10 version 21H2, Windows 10 version 22H2, Windows 11 version 23H2, Windows 11 version 24H2, Windows 11 version 25H2, Windows 11 version 26H2, Windows Server 2022, Windows Server 2025

Version / rangeSource status
4.8.1 to before 2.0.50727.9188 AND 3.0.30729.9171 AND 4.8.9363.0affected
microsoft version evidence

Microsoft · Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2

Platforms: Windows Server 2012, Windows Server 2012 R2

Version / rangeSource status
4.7.0 to before 4.7.4150.0affected
microsoft version evidence

Microsoft · Microsoft .NET Framework 4.8

Platforms: Windows 10 version 1607, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016

Version / rangeSource status
4.8.0 to before 4.8.4811.0affected
microsoft version evidence

Microsoft · Microsoft .NET Framework 4.8.1

Platforms: Windows 11 version 26H1

Version / rangeSource status
4.8.0.0 to before 4.8.9363.0affected
microsoft version evidence

Microsoft · Microsoft Visual Studio 2022 version 17.14

Version / rangeSource status
17.14.0 to before 17.14.42affected
microsoft version evidence

Microsoft · Microsoft Visual Studio 2026 version 18.10

Version / rangeSource status
18.10.0 to before 18.10.4affected
microsoft version evidence

Microsoft · System.Security.Cryptography.Xml

Platforms: .NET 8.0 runtime installed on Linux, .NET 8.0 runtime installed on Mac OS, .NET 8.0 runtime installed on Windows

Version / rangeSource status
10.0.0 to before 8.0.5affected
microsoft version evidence

Microsoft · Windows 10 Version 1607

Platforms: 32-bit Systems, x64-based Systems

Version / rangeSource status
10.0.14393.0 to before 10.0.14393.9612affected
microsoft version evidence

Microsoft · Windows 10 Version 1809

Platforms: 32-bit Systems, x64-based Systems

Version / rangeSource status
10.0.17763.0 to before 10.0.17763.9376affected
microsoft version evidence

Microsoft · Windows Server 2012 R2

Platforms: x64-based Systems

Version / rangeSource status
6.3.9600.0 to before 6.3.9600.23470affected
microsoft version evidence

Microsoft · Windows Server 2012 R2 (Server Core installation)

Platforms: x64-based Systems

Version / rangeSource status
6.3.9600.0 to before 6.3.9600.23470affected
microsoft version evidence

Microsoft · Windows Server 2016

Platforms: x64-based Systems

Version / rangeSource status
10.0.14393.0 to before 10.0.14393.9612affected
microsoft version evidence

Microsoft · Windows Server 2016 (Server Core installation)

Platforms: x64-based Systems

Version / rangeSource status
10.0.14393.0 to before 10.0.14393.9612affected
microsoft version evidence

Microsoft · Windows Server 2019

Platforms: x64-based Systems

Version / rangeSource status
10.0.17763.0 to before 10.0.17763.9376affected
microsoft version evidence

Microsoft · Windows Server 2019 (Server Core installation)

Platforms: x64-based Systems

Version / rangeSource status
10.0.17763.0 to before 10.0.17763.9376affected
microsoft version evidence

Microsoft · Windows Server 2022

Platforms: x64-based Systems

Version / rangeSource status
10.0.20348.0 to before 10.0.20348.5761affected
microsoft version evidence

Microsoft · Windows Server 2025

Platforms: x64-based Systems

Version / rangeSource status
10.0.26100.0 to before 10.0.26100.33650affected
microsoft version evidence

Microsoft · Windows Server 2025 (Server Core installation)

Platforms: x64-based Systems

Version / rangeSource status
10.0.26100.0 to before 10.0.26100.33650affected
microsoft version evidence

Original source description

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

References