CVE-2026-59126

Analyzed Analyzed - Analysis Complete

Race Condition in Windows Event Logging Service

Publication date: 2026-08-11

Last updated on: 2026-08-12

Assigner: Microsoft Corporation

Description

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

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-08-11

Last Modified

2026-08-12

Generated

2026-09-01

AI Q&A

2026-08-12

EPSS Evaluated

2026-08-30

NVD

CVE-2026-59126

EUVD

EUVD-2026-56611

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	windows_10_21h2	to 10.0.19044.7663 (exc)
microsoft	windows_10_21h2	to 10.0.19044.7663 (exc)
microsoft	windows_10_21h2	to 10.0.19044.7663 (exc)
microsoft	windows_10_22h2	to 10.0.19045.7663 (exc)
microsoft	windows_10_22h2	to 10.0.19045.7663 (exc)
microsoft	windows_10_22h2	to 10.0.19045.7663 (exc)
microsoft	windows_11_23h2	to 10.0.22631.7517 (exc)
microsoft	windows_11_23h2	to 10.0.22631.7517 (exc)
microsoft	windows_11_24h2	to 10.0.26100.9106 (exc)
microsoft	windows_11_24h2	to 10.0.26100.9106 (exc)
microsoft	windows_11_26h1	to 10.0.28000.2704 (exc)
microsoft	windows_11_26h1	to 10.0.28000.2704 (exc)
microsoft	windows_11_25h2	to 10.0.26200.9106 (exc)
microsoft	windows_11_25h2	to 10.0.26200.9106 (exc)
microsoft	windows_server_2022	to 10.0.20348.5440 (exc)
microsoft	windows_server_2025	to 10.0.26100.33222 (exc)

Helpful Resources

Exploitability

CWE

KEV

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.

Attack-Flow Graph

Executive Summary

This is a race condition vulnerability in the Windows Event Logging Service. It occurs when improper synchronization allows concurrent execution using shared resources. An authorized attacker can exploit this to elevate their privileges locally.

Detection Guidance

Detecting this race condition vulnerability requires monitoring Windows Event Logging Service for unusual concurrent access patterns or privilege escalation attempts. Check for repeated failed logon attempts or unexpected privilege changes in Event Viewer logs (Event ID 4624, 4672, 4688). Use PowerShell commands like Get-WinEvent -LogName Security to analyze security logs for anomalies.

Impact Analysis

An attacker with local access could exploit this to gain higher privileges on your system. This might allow them to install malicious software, access sensitive data, or perform unauthorized actions.

Compliance Impact

This vulnerability allows local privilege escalation through a race condition in Windows Event Logging Service. Such unauthorized access could potentially lead to unauthorized data access or modification, which may violate compliance requirements under GDPR (data protection) or HIPAA (health information security).

Mitigation Strategies

Apply the latest security updates from Microsoft to patch the Windows Event Logging Service. Monitor Microsoft's security advisories for patches and follow their recommended mitigation steps.

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