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

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Vendors Products
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.net Framework Subscribe
Microsoft Visual Studio 2026 Version 18.10 Subscribe
System.security.cryptography.xml Subscribe
Visual Studio 2022 Subscribe
Windows 10 1607 Subscribe
Windows 10 1809 Subscribe
Windows Server 2012 R2 Subscribe
Windows Server 2016 Subscribe
Windows Server 2019 Subscribe
Windows Server 2022 Subscribe
Windows Server 2025 Subscribe
Advisories
Source ID Title
Github GHSA Github GHSA GHSA-vrv5-2jg9-4mmr Microsoft Security Advisory CVE-2026-96222 - .NET Spoofing Vulnerability
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Wed, 14 Oct 2026 05:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 13 Oct 2026 19:15:00 +0000

Type Values Removed Values Added
Description Improper certificate validation in Active Directory Federation Services (AD FS) allows an unauthorized attacker to perform spoofing over a network.
Title Active Directory Federation Services (AD FS) Spoofing Vulnerability
First Time appeared Microsoft
Microsoft .net
Microsoft .net Framework
Microsoft microsoft Visual Studio 2026 Version 18.10
Microsoft system.security.cryptography.xml
Microsoft visual Studio 2022
Microsoft windows 10 1607
Microsoft windows 10 1809
Microsoft windows Server 2012 R2
Microsoft windows Server 2016
Microsoft windows Server 2019
Microsoft windows Server 2022
Microsoft windows Server 2025
Weaknesses CWE-295
CPEs cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_framework:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:microsoft_visual_studio_2026_version_18.10:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:system.security.cryptography.xml:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_server_2012_R2:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft .net
Microsoft .net Framework
Microsoft microsoft Visual Studio 2026 Version 18.10
Microsoft system.security.cryptography.xml
Microsoft visual Studio 2022
Microsoft windows 10 1607
Microsoft windows 10 1809
Microsoft windows Server 2012 R2
Microsoft windows Server 2016
Microsoft windows Server 2019
Microsoft windows Server 2022
Microsoft windows Server 2025
References
Metrics cvssV3_1

{'score': 7.4, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-10-14T03:57:11.525Z

Reserved: 2026-09-22T18:57:22.166Z

Link: CVE-2026-96222

cve-icon Vulnrichment

Updated: 2026-10-13T22:19:09.570Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-13T19:21:48.030

Modified: 2026-10-14T04:18:57.730

Link: CVE-2026-96222

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses