Description
Improper certificate validation in Active Directory Federation Services (AD FS) allows an unauthorized attacker to perform spoofing over a network.
Published: 2026-10-13
Score: 7.4 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-vrv5-2jg9-4mmr Microsoft Security Advisory CVE-2026-96222 - .NET Spoofing Vulnerability
History

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'}


Subscriptions

Microsoft .net .net Framework Microsoft Visual Studio 2026 Version 18.10 System.security.cryptography.xml Visual Studio 2022 Windows 10 1607 Windows 10 1809 Windows Server 2012 R2 Windows Server 2016 Windows Server 2019 Windows Server 2022 Windows Server 2025
cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-10-13T21:34:55.953Z

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

Link: CVE-2026-96222

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

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

Modified: 2026-10-13T19:27:28.620

Link: CVE-2026-96222

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses