CVE-2026-96222: Active Directory Federation Services (AD FS) Spoofing Vulnerability

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

• microsoft .net8.0.0 and later · before 8.0.5
• microsoft .net framework3.5
• microsoft .net framework4.6.2
• microsoft .net framework4.7
• microsoft .net framework4.7.1
• microsoft .net framework4.7.2
• microsoft .net framework4.8
• microsoft .net framework4.8.1
• microsoft visual studio 202217.14.0 and later · before 17.14.42
• microsoft visual studio 202618.10.0 and later · before 18.10.4
• microsoft windows 10 1607before 10.0.14393.9612
• microsoft windows 10 1809before 10.0.17763.9376
• microsoft windows server 2012all versions
• microsoft windows server 2012r2
• microsoft windows server 2016before 10.0.14393.9612
• microsoft windows server 2019before 10.0.17763.9376
• microsoft windows server 2022before 10.0.20348.5761
• microsoft windows server 2025before 10.0.26100.33650

Versions reported by the vendor

Affected version ranges reported by the assigning authority (microsoft). Independent of NVD's CPE analysis and usually ahead of it.

• Microsoft Microsoft .NET Framework 3.5

  • 3.5.0 and later · before 2.0.50727.9188 AND 3.0.30729.9171affected

• Microsoft Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2

  • 3.0.0.0 and later · before 2.0.50727.8987 AND 3.0.30729.8982 AND 4.7.4150.0affected

• Microsoft Microsoft .NET Framework 3.5 AND 4.7.2

  • 4.7.0 and later · before 2.0.50727.9073 AND 3.0.30729.9070 AND 4.7.4150.0affected

• Microsoft Microsoft .NET Framework 3.5 AND 4.8

  • 4.8.0 and later · before 2.0.50727.9073 AND 3.0.30729.9070 AND 4.8.4811.0affected

• Microsoft Microsoft .NET Framework 3.5 AND 4.8.1

  • 4.8.1 and later · before 2.0.50727.9188 AND 3.0.30729.9171 AND 4.8.9363.0affected

• Microsoft Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2

  • 4.7.0 and later · before 4.7.4150.0affected

• Microsoft Microsoft .NET Framework 4.8

  • 4.8.0 and later · before 4.8.4811.0affected

• Microsoft Microsoft .NET Framework 4.8.1

  • 4.8.0.0 and later · before 4.8.9363.0affected

• Microsoft Microsoft Visual Studio 2022 version 17.14

  • 17.14.0 and later · before 17.14.42affected

• Microsoft Microsoft Visual Studio 2026 version 18.10

  • 18.10.0 and later · before 18.10.4affected

• Microsoft System.Security.Cryptography.Xml

  • 10.0.0 and later · before 8.0.5affected

• Microsoft Windows 10 Version 1607

  • 10.0.14393.0 and later · before 10.0.14393.9612affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Other highest-scoring records for the same primary product.

• CVE-2026-33824Windows Internet Key Exchange (IKE) Service Extensions Remote Code Execution VulnerabilityKEV
  92Now
• CVE-2018-8174A remote code execution vulnerability exists in the way that the VBScript engine handles objects in memory, aka "Windows VBScript Engine RemKEV
  86Now
• CVE-2026-21510Windows Shell Security Feature Bypass VulnerabilityKEV
  83Now

Published before and after this one in the same product

• ← EarlierCVE-2026-96209Oct 13, 2026 · Windows Network File System Elevation of Privilege Vulnerability
  28Monitor
• ← EarlierCVE-2026-96217Oct 13, 2026 · Windows NTFS Elevation of Privilege Vulnerability
  31Monitor
• Later →CVE-2026-96243Oct 13, 2026 · Windows WalletService Elevation of Privilege Vulnerability
  31Monitor

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Root cause

A certificate validation error is silently swallowed instead of terminating the connection. Often, code added for a test environment makes its way into production.

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

1override fun checkServerTrusted(chain: Array<X509Certificate>, type: String) {2  // Left empty for the test environment3}

1val client = OkHttpClient.Builder()2  .certificatePinner(3    CertificatePinner.Builder()4      .add("api.sirius.example", "sha256/…")5      .build()6  ).build()

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.