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Microsoft Security Response CenterCVE-2026-59116

Windows Remote Desktop Security Feature Bypass Vulnerability

HighVendor CVSS 6.8 / 10 1 CVE Published Oct 13, 2026 at 7:00 AM UTC
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Summary

Use of a broken or risky cryptographic algorithm in Windows Remote Desktop allows an unauthorized attacker to bypass a security feature 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 22 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)

Remediation

Install KB5099538. Install KB5099540. Install KB5099539. Install KB5099536. Install KB5101650. Install KB5099414. Install KB5101649. Install KB5099535. Install KB5099445. Install KB5099444.

Vendor-listed fixes

  • 10.0.17763.9020

  • 10.0.20348.5386

  • 10.0.19044.7548

  • 10.0.19045.7548

  • 10.0.26100.33158

  • 10.0.26200.8875

  • 10.0.22631.7376

  • 10.0.26100.8875

Show 4 more fixes

  • 10.0.28000.2525

  • 10.0.14393.9339

  • 6.2.9200.26226

  • 6.3.9600.23291

CVEs in this advisory 1

CVE-2026-59116

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.

  3. Confirmed at the source

    Our collector saw this advisory during a later source check.

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