CVE-2026-20853
Unknown Unknown - Not Provided
Race Condition in Windows WalletService Enables Local Privilege Escalation

Publication date: 2026-01-13

Last updated on: 2026-01-13

Assigner: Microsoft Corporation

Description
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows WalletService allows an unauthorized attacker to elevate privileges locally.
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Meta Information
Published
2026-01-13
Last Modified
2026-01-13
Generated
2026-06-16
AI Q&A
2026-01-14
EPSS Evaluated
2026-06-15
NVD
CVE-2026-20853
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
microsoft windows_walletservice *
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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 in the Windows WalletService where concurrent execution using a shared resource lacks proper synchronization. This flaw allows an unauthorized local attacker to elevate their privileges on the affected system. [1]

Impact Analysis

An attacker exploiting this vulnerability can gain elevated privileges locally, potentially allowing them to perform actions that require higher permissions, which could compromise system security and integrity. [1]

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