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CVE PROGRAM SOURCE RECORD8.1 High

CVE-2026-66802

Windows Device Health Attestation (DHA) Remote Code Execution Vulnerability

Description

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Device Health Attestation (DHA) allows an unauthorized 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 10 Version 1809

  • 10.0.17763.0 to < 10.0.17763.9121affected

Microsoft Windows 11 version 26H1

  • 10.0.28000.0 to < 10.0.28000.2704affected

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