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Microsoft Security Response CenterCVE-2026-70127

Windows Domain Name Service Remote Code Execution Vulnerability

HighVendor CVSS 8.1 / 10 1 CVE Published Oct 13, 2026 at 7:00 AM UTC

Summary

Use after free in DNS Server allows an unauthorized attacker to execute code 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 Server 2025 (Server Core installation)

  • Windows Server 2025

Show 8 more products
  • 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 KB5126651. Install KB5126655. Install KB5126646. Install KB5126868. Install KB5126835. Install KB5126836.

Vendor-listed fixes

  • 10.0.17763.9376

  • 10.0.20348.5761

  • 10.0.26100.33650

  • 10.0.14393.9612

  • 6.2.9200.26434

  • 6.3.9600.23470

CVEs in this advisory 1

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.