CVE-2026-42977
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Windows Push Notifications Race Condition Privilege Escalation

Publication date: 2026-06-09

Last updated on: 2026-06-09

Assigner: Microsoft Corporation

Description
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Push Notifications allows an authorized attacker to elevate privileges locally.
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Meta Information
Published
2026-06-09
Last Modified
2026-06-09
Generated
2026-06-10
AI Q&A
2026-06-09
EPSS Evaluated
N/A
NVD
EUVD
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
microsoft windows_push_notifications *
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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 Windows Push Notifications caused by concurrent execution using a shared resource without proper synchronization.

It allows an authorized attacker to elevate their privileges locally on the affected system.

Impact Analysis

An attacker who exploits this vulnerability can gain higher privileges on the affected Windows system.

This elevation of privilege can lead to unauthorized access to sensitive data, modification of system settings, or execution of malicious code with elevated rights.

Mitigation Strategies

To mitigate this vulnerability, it is important to apply any security updates or patches provided by Microsoft for Windows Push Notifications as soon as they become available.

Since the vulnerability involves a race condition allowing local privilege escalation, limiting local user access and ensuring that only authorized users have access to affected systems can help reduce risk.

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