Active Directory Federation Services (AD FS) Spoofing Vulnerability

🔗 CVE IDs covered (1)

📋 Description

🎯 Affected products12

• Windows 10 Version 1607 for 32-bit Systems
• Windows 10 Version 1607 for x64-based Systems
• Windows 10 Version 1809 for 32-bit Systems
• Windows 10 Version 1809 for x64-based Systems
• Windows Server 2016
• Windows Server 2016 (Server Core installation)
• Windows Server 2019
• Windows Server 2019 (Server Core installation)
• Windows Server 2022
• Windows Server 2022 (Server Core installation)
• Windows Server 2025
• Windows Server 2025 (Server Core installation)

✅ Remediation

KB5126651 (Security Update) — fixed build 10.0.17763.9376 KB5126655 (Security Update) — fixed build 10.0.20348.5761 KB5126646 (Security Update) — fixed build 10.0.26100.33650 KB5126868 (Security Update) — fixed build 10.0.14393.9612

🔗 References (9)

• advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83674
• patchhttps://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5126651
• referencehttps://support.microsoft.com/help/5126651
• patchhttps://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5126655
• referencehttps://support.microsoft.com/help/5126655
• patchhttps://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5126646
• referencehttps://support.microsoft.com/help/5126646
• patchhttps://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5126868
• referencehttps://support.microsoft.com/help/5126868