CVE-2026-66802

Summary

Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Azure Attestation service and Device Health Attestation Service allows an unauthorized attacker to execute code over a network.

Affected Software

VendorProductVersion RangeStatus
MicrosoftWindows 10 Version 180910.0.17763.0 < 10.0.17763.9115affected
MicrosoftWindows 11 version 26H110.0.28000.0 < 10.0.28000.2704affected
MicrosoftWindows Server 201910.0.17763.0 < 10.0.17763.9115affected
MicrosoftWindows Server 2019 (Server Core installation)10.0.17763.0 < 10.0.17763.9115affected
MicrosoftWindows Server 202210.0.20348.0 < 10.0.20348.5499affected
MicrosoftWindows Server 202510.0.26100.0 < 10.0.26100.33296affected
MicrosoftWindows Server 2025 (Server Core installation)10.0.26100.0 < 10.0.26100.33296affected

Weaknesses

  • CWE-362: CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
  • CWE-416: CWE-416: Use After Free

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: total

References