CVE-2026-21234
Analyzed Analyzed - Analysis Complete
Race Condition in Windows Connected Devices Service Elevates Privileges

Publication date: 2026-02-10

Last updated on: 2026-02-11

Assigner: Microsoft Corporation

Description
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Connected Devices Platform Service allows an authorized attacker to elevate privileges locally.
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Meta Information
Published
2026-02-10
Last Modified
2026-02-11
Generated
2026-06-16
AI Q&A
2026-02-10
EPSS Evaluated
2026-06-15
NVD
CVE-2026-21234
EUVD
EUVD-2026-7352
Affected Vendors & Products
Showing 18 associated CPEs
Vendor Product Version / Range
microsoft windows_10_1809 to 10.0.17763.8389 (exc)
microsoft windows_server_2019 to 10.0.17763.8389 (exc)
microsoft windows_server_2022 to 10.0.20348.4711 (exc)
microsoft windows_server_2025 to 10.0.26100.32313 (exc)
microsoft windows_11_24h2 to 10.0.26100.7781 (exc)
microsoft windows_11_24h2 to 10.0.26100.7781 (exc)
microsoft windows_11_23h2 to 10.0.22631.6649 (exc)
microsoft windows_11_23h2 to 10.0.22631.6649 (exc)
microsoft windows_11_25h2 to 10.0.26200.7781 (exc)
microsoft windows_11_25h2 to 10.0.26200.7781 (exc)
microsoft windows_server_2022_23h2 to 10.0.25398.2149 (exc)
microsoft windows_10_22h2 to 10.0.19045.6937 (exc)
microsoft windows_10_22h2 to 10.0.19045.6937 (exc)
microsoft windows_10_22h2 to 10.0.19045.6937 (exc)
microsoft windows_10_21h2 to 10.0.19044.6937 (exc)
microsoft windows_10_21h2 to 10.0.19044.6937 (exc)
microsoft windows_10_21h2 to 10.0.19044.6937 (exc)
microsoft windows_10_1809 to 10.0.17763.8389 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-362 The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.
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Executive Summary

This vulnerability is a race condition occurring in the Windows Connected Devices Platform Service. It involves concurrent execution using a shared resource without proper synchronization, which allows an authorized attacker to elevate their privileges locally on the affected system.

Impact Analysis

The impact of this vulnerability is an elevation of privilege, meaning an attacker who already has some level of access can gain higher privileges on the system. This can lead to unauthorized actions, potentially compromising the confidentiality, integrity, and availability of the system.

Compliance Impact

I don't know

Detection Guidance

I don't know

Mitigation Strategies

This vulnerability allows an authorized attacker to elevate privileges locally due to a race condition in the Windows Connected Devices Platform Service.

To mitigate this vulnerability, it is recommended to apply the security updates provided by Microsoft as soon as they are available.

Ensure that only authorized users have local access to systems running the affected service to reduce the risk of exploitation.

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