CVE-2026-21234

Summary

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Connected Devices Platform Service allows an authorized attacker to elevate privileges locally.

Affected Software

VendorProductVersion RangeStatus
MicrosoftWindows 10 Version 180910.0.17763.0 < 10.0.17763.8389affected
MicrosoftWindows 10 Version 21H210.0.19044.0 < 10.0.19044.6937affected
MicrosoftWindows 10 Version 22H210.0.19045.0 < 10.0.19045.6937affected
MicrosoftWindows 11 version 22H310.0.22631.0 < 10.0.22631.6649affected
MicrosoftWindows 11 Version 23H210.0.22631.0 < 10.0.22631.6649affected
MicrosoftWindows 11 Version 24H210.0.26100.0 < 10.0.26100.7840affected
MicrosoftWindows 11 Version 25H210.0.26200.0 < 10.0.26200.7840affected
MicrosoftWindows 11 version 26H110.0.28000.0 < 10.0.28000.1575affected
MicrosoftWindows 11 Version 26H110.0.28000.0 < 10.0.28000.1575affected
MicrosoftWindows Server 201910.0.17763.0 < 10.0.17763.8389affected
MicrosoftWindows Server 2019 (Server Core installation)10.0.17763.0 < 10.0.17763.8389affected
MicrosoftWindows Server 202210.0.20348.0 < 10.0.20348.4773affected
MicrosoftWindows Server 2022, 23H2 Edition (Server Core installation)10.0.25398.0 < 10.0.25398.2149affected
MicrosoftWindows Server 202510.0.26100.0 < 10.0.26100.32370affected
MicrosoftWindows Server 2025 (Server Core installation)10.0.26100.0 < 10.0.26100.32370affected

Weaknesses

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

ADP Enrichment

CISA ADP Vulnrichment

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

References