CVE-2026-96222
Active Directory Federation Services (AD FS) Spoofing Vulnerability
CVSS Score
7.4
EPSS Score
0.0%
EPSS Percentile
0th
Improper certificate validation in Active Directory Federation Services (AD FS) allows an unauthorized attacker to perform spoofing over a network.
| Vendor | microsoft |
| Product | microsoft .net framework 3.5 |
| Ecosystems | |
| Industries | TechnologyEnterprise |
| Published | Oct 13, 2026 |
| Last Updated | Oct 13, 2026 |
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CVSS v3 Breakdown
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 Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Microsoft / Microsoft .NET Framework 3.5
3.5.0 < 2.0.50727.9188 AND 3.0.30729.9171
Microsoft / Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2
3.0.0.0 < 2.0.50727.8987 AND 3.0.30729.8982 AND 4.7.4150.0
Microsoft / Microsoft .NET Framework 3.5 AND 4.7.2
4.7.0 < 2.0.50727.9073 AND 3.0.30729.9070 AND 4.7.4150.0
Microsoft / Microsoft .NET Framework 3.5 AND 4.8
4.8.0 < 2.0.50727.9073 AND 3.0.30729.9070 AND 4.8.4811.0
Microsoft / Microsoft .NET Framework 3.5 AND 4.8.1
4.8.1 < 2.0.50727.9188 AND 3.0.30729.9171 AND 4.8.9363.0
Microsoft / Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2
4.7.0 < 4.7.4150.0
Microsoft / Microsoft .NET Framework 4.8
4.8.0 < 4.8.4811.0
Microsoft / Microsoft .NET Framework 4.8.1
4.8.0.0 < 4.8.9363.0
Microsoft / Microsoft Visual Studio 2022 version 17.14
17.14.0 < 17.14.42
Microsoft / Microsoft Visual Studio 2026 version 18.10
18.10.0 < 18.10.4
Microsoft / System.Security.Cryptography.Xml
10.0.0 < 8.0.5
Microsoft / Windows 10 Version 1607
10.0.14393.0 < 10.0.14393.9612
Microsoft / Windows 10 Version 1809
10.0.17763.0 < 10.0.17763.9376
Microsoft / Windows Server 2012 R2
6.3.9600.0 < 6.3.9600.23470
Microsoft / Windows Server 2012 R2 (Server Core installation)
6.3.9600.0 < 6.3.9600.23470
Microsoft / Windows Server 2016
10.0.14393.0 < 10.0.14393.9612
Microsoft / Windows Server 2016 (Server Core installation)
10.0.14393.0 < 10.0.14393.9612
Microsoft / Windows Server 2019
10.0.17763.0 < 10.0.17763.9376
Microsoft / Windows Server 2019 (Server Core installation)
10.0.17763.0 < 10.0.17763.9376
Microsoft / Windows Server 2022
10.0.20348.0 < 10.0.20348.5761
Microsoft / Windows Server 2025
10.0.26100.0 < 10.0.26100.33650
Microsoft / Windows Server 2025 (Server Core installation)
10.0.26100.0 < 10.0.26100.33650