CVE-2026-96222
High
Description
Improper certificate validation in Active Directory Federation Services (AD FS) allows an unauthorized attacker to perform spoofing over a network.
SeverityHigh
CVSS7.4
Exploit probability—
Product
Microsoft Windows
PublishedOct 13, 2026
First seenOct 13, 2026
Weakness typeCWE-295CWE-295
How to fix
Update
- microsoft windows_10_160710.0.14393.9612 or later
- microsoft windows_10_180910.0.17763.9376 or later
- microsoft windows_server_201610.0.14393.9612 or later
- microsoft windows_server_201910.0.17763.9376 or later
- microsoft windows_server_202210.0.20348.5761 or later
- microsoft windows_server_202510.0.26100.33650 or later
- microsoft .net8.0.5 or later
- microsoft visual_studio_202217.14.42 or later
- microsoft visual_studio_202618.10.4 or later
- System.Security.Cryptography.Xml8.0.5 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| microsoft windows_10_1607 | v < 10.0.14393.9612 | 10.0.14393.9612 |
| microsoft windows_10_1809 | v < 10.0.17763.9376 | 10.0.17763.9376 |
| microsoft windows_server_2012 | No range specified, r2 | — |
| microsoft windows_server_2016 | v < 10.0.14393.9612 | 10.0.14393.9612 |
| microsoft windows_server_2019 | v < 10.0.17763.9376 | 10.0.17763.9376 |
| microsoft windows_server_2022 | v < 10.0.20348.5761 | 10.0.20348.5761 |
| microsoft windows_server_2025 | v < 10.0.26100.33650 | 10.0.26100.33650 |
| microsoft .net | 8.0.0 ≤ v < 8.0.5 | 8.0.5 |
| microsoft visual_studio_2022 | 17.14.0 ≤ v < 17.14.42 | 17.14.42 |
| microsoft visual_studio_2026 | 18.10.0 ≤ v < 18.10.4 | 18.10.4 |
| microsoft .net_framework | 4.8.1, 4.8, 4.6.2, 4.7, 4.7.1, 4.7.2, 3.5 | — |
| System.Security.Cryptography.XmlNuGet | 8.0.0 ≤ v < 8.0.5 | 8.0.5 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.