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Microsoft Security Response CenterCVE-2026-85844

Windows Kerberos Elevation of Privilege Vulnerability

HighVendor CVSS 9.8 / 10 1 CVE Published Nov 10, 2026 at 8:00 AM UTC
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Summary

Authentication bypass using an alternate path or channel in Windows Kerberos allows an unauthorized attacker to elevate privileges over a network.

Products covered

  • Windows 10 Version 1809 for 32-bit Systems

  • Windows 10 Version 1809 for x64-based Systems

  • Windows Server 2019

  • Windows Server 2019 (Server Core installation)

  • Windows Server 2022

  • Windows Server 2022 (Server Core installation)

  • Windows 10 Version 21H2 for 32-bit Systems

  • Windows 10 Version 21H2 for ARM64-based Systems

Show 24 more products

  • Windows 10 Version 21H2 for x64-based Systems

  • Windows 10 Version 22H2 for x64-based Systems

  • Windows 10 Version 22H2 for ARM64-based Systems

  • Windows 10 Version 22H2 for 32-bit Systems

  • Windows Server 2025 (Server Core installation)

  • Windows 11 Version 25H2 for ARM64-based Systems

  • Windows 11 Version 25H2 for x64-based Systems

  • Windows 11 Version 23H2 for ARM64-based Systems

  • Windows 11 Version 23H2 for x64-based Systems

  • Windows 11 Version 24H2 for ARM64-based Systems

  • Windows 11 Version 24H2 for x64-based Systems

  • Windows Server 2025

  • Windows 11 version 26H1 for x64-based Systems

  • Windows 11 Version 26H1 for ARM64-based Systems

  • Windows 10 Version 1607 for 32-bit Systems

  • Windows 10 Version 1607 for x64-based Systems

  • Windows Server 2016

  • Windows Server 2016 (Server Core installation)

  • Windows Server 2012

  • Windows Server 2012 (Server Core installation)

  • Windows Server 2012 R2

  • Windows Server 2012 R2 (Server Core installation)

  • Windows 11 Version 26H2 for ARM64-based Systems

  • Windows 11 Version 26H2 for x64-based Systems

Remediation

Install KB5131085. Install KB5131090. Install KB5131096. Install KB5131080. Install KB5131077. Install KB5132061. Install KB5132043. Install KB5131087. Install KB5132059. Install KB5131291. Install KB5126835. Install KB5126836.

Vendor-listed fixes

  • 10.0.17763.9487

  • 10.0.20348.5870

  • 10.0.19044.7846

  • 10.0.19045.7846

  • 10.0.26100.33822

  • 10.0.26100.33730

  • 10.0.26200.9974

  • 10.0.26200.9911

Show 9 more fixes

  • 10.0.22631.7711

  • 10.0.26100.9974

  • 10.0.26100.9911

  • 10.0.28000.3501

  • 10.0.14393.9688

  • 6.2.9200.26434

  • 6.3.9600.23470

  • 10.0.26300.9974

  • 10.0.26300.9911

CVEs in this advisory 1

CVE-2026-85844

Updates

  1. Published by Microsoft Security Response Center

    The publication date reported by the vendor.

  2. Added to SecurityAlert

    We collected the advisory from the official source.

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