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CVE PROGRAM SOURCE RECORD6.6 Medium

CVE-2026-61920

Windows DNS Server Remote Code Execution Vulnerability

Description

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows DNS allows an authorized attacker to execute code 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 Server 2012 R2

  • 6.3.9600.0 to < 6.3.9600.23338affected

Microsoft Windows Server 2012 R2 (Server Core installation)

  • 6.3.9600.0 to < 6.3.9600.23338affected

Microsoft Windows Server 2016

  • 10.0.14393.0 to < 10.0.14393.9418affected

Microsoft Windows Server 2016 (Server Core installation)

  • 10.0.14393.0 to < 10.0.14393.9418affected

Microsoft Windows Server 2019

  • 10.0.17763.0 to < 10.0.17763.9121affected

Microsoft Windows Server 2019 (Server Core installation)

  • 10.0.17763.0 to < 10.0.17763.9121affected

Microsoft Windows Server 2022

  • 10.0.20348.0 to < 10.0.20348.5499affected

Microsoft Windows Server 2025

  • 10.0.26100.0 to < 10.0.26100.33296affected

Microsoft Windows Server 2025 (Server Core installation)

  • 10.0.26100.0 to < 10.0.26100.33296affected

References