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CVE PROGRAM SOURCE RECORD4.8 Medium

CVE-2026-83646

Active Directory Federation Services (AD FS) Spoofing Vulnerability

Description

Url redirection to untrusted site ('open redirect') in Active Directory Federation Services (AD FS) allows an authorized attacker to perform spoofing over a network.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Microsoft Windows 10 Version 1607

  • 10.0.14393.0 to < 10.0.14393.9612affected

Microsoft Windows 10 Version 1809

  • 10.0.17763.0 to < 10.0.17763.9376affected

Microsoft Windows Server 2016

  • 10.0.14393.0 to < 10.0.14393.9612affected

Microsoft Windows Server 2016 (Server Core installation)

  • 10.0.14393.0 to < 10.0.14393.9612affected

Microsoft Windows Server 2019

  • 10.0.17763.0 to < 10.0.17763.9376affected

Microsoft Windows Server 2019 (Server Core installation)

  • 10.0.17763.0 to < 10.0.17763.9376affected

Microsoft Windows Server 2022

  • 10.0.20348.0 to < 10.0.20348.5761affected

Microsoft Windows Server 2025

  • 10.0.26100.0 to < 10.0.26100.33650affected

Microsoft Windows Server 2025 (Server Core installation)

  • 10.0.26100.0 to < 10.0.26100.33650affected

References