Windows Active Directory Certificate Validation Bypass Reachable by Unauthenticated Network Attackers
Last refreshed2026-10-15
Status: UPDATED
| Advisory ID: CVE-2026-96222
Key Details
CVE
CVE-2026-96222
CVSS Score / Version
7.4 (High) / CVSS v3.1
Updated
2026-10-14
CVSS Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS Prose
attack vector is network; attack complexity is high; privileges required is none; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is none.
Affected products
see table below
Classified as
CWE-295 (Improper Certificate Validation)
Exploitation prediction (EPSS)
0.58% probability of exploitation in the next 30 days (47% percentile) -- FIRST.org's EPSS model.
Affected Products, Subsystems & Sectors
Vendor
Product
Affected Versions
Patch Status
Microsoft
Windows Server 2025
Microsoft
Windows 10 (version 1607)
Microsoft
Windows 10 (version 1809)
Microsoft
Windows Server 2016
Microsoft
Windows Server 2019
Microsoft
Windows Server 2022
Microsoft
Windows Server 2012 R2
Microsoft
Microsoft Visual Studio 2022 version 17.14
Microsoft
Microsoft Visual Studio 2026 version 18.10
Microsoft
Microsoft .NET Framework 3.5
Microsoft
Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2
Microsoft
Microsoft .NET Framework 3.5 AND 4.7.2
Microsoft
Microsoft .NET Framework 3.5 AND 4.8
Microsoft
Microsoft .NET Framework 3.5 AND 4.8.1
Microsoft
Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2
Microsoft
Microsoft .NET Framework 4.8
Microsoft
Microsoft .NET Framework 4.8.1
Microsoft
System.Security.Cryptography.Xml
Subsystems
OT Supporting Infrastructure
Sectors
All Sectors
What to Know
Improper certificate validation in Active Directory Federation Services (AD FS) allows an unauthorized attacker to perform spoofing over a network.
What to Do
Monitor Microsoft's web page for any future patch releases.