CVE-2026-88174
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Race Condition in Windows Deployment Services

Vulnerability report for CVE-2026-88174, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-10-13

Last updated on: 2026-10-13

Assigner: Microsoft Corporation

Description

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Deployment Services allows an unauthorized attacker to execute code over a network.

CVSS Scores

EPSS Scores

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Meta Information

Published
2026-10-13
Last Modified
2026-10-13
Generated
2026-10-19
AI Q&A
2026-10-14
EPSS Evaluated
2026-10-18
NVD
EUVD

Affected Vendors & Products

Showing 13 associated CPEs
Vendor Product Version / Range
Microsoft Windows 10 Version 1607 10.0.14393.0
Microsoft Windows 10 Version 1809 10.0.17763.0
Microsoft Windows Server 2012 6.2.9200.0
Microsoft Windows Server 2012 (Server Core installation) 6.2.9200.0
Microsoft Windows Server 2012 R2 6.3.9600.0
Microsoft Windows Server 2012 R2 (Server Core installation) 6.3.9600.0
Microsoft Windows Server 2016 10.0.14393.0
Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.0
Microsoft Windows Server 2019 10.0.17763.0
Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.0
Microsoft Windows Server 2022 10.0.20348.0
Microsoft Windows Server 2025 10.0.26100.0
Microsoft Windows Server 2025 (Server Core installation) 10.0.26100.0

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
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

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Executive Summary

This is a race condition vulnerability in Windows Deployment Services where improper synchronization during concurrent execution allows an unauthorized attacker to execute code remotely over a network.

Detection Guidance

Detecting this race condition vulnerability in Windows Deployment Services requires monitoring for unusual network activity or unauthorized code execution attempts. Check Windows Event Logs for suspicious events related to WDS (Windows Deployment Services) and review network traffic for anomalies. Use PowerShell commands like Get-WinEvent -LogName 'System' | Where-Object {$_.Message -like '*WDS*'} to inspect relevant logs.

Impact Analysis

An attacker could exploit this to run malicious code on affected systems, potentially leading to data theft, system compromise, or further network infiltration without needing authentication.

Compliance Impact

This vulnerability could potentially impact compliance with GDPR and HIPAA by enabling unauthorized remote code execution through a race condition in Windows Deployment Services. Such unauthorized access may lead to data breaches or unauthorized data processing, which are key concerns under these regulations.

Mitigation Strategies

Apply the latest security updates from Microsoft for Windows Deployment Services to address the race condition vulnerability. Monitor Microsoft's security advisories for patches and disable the service if not in use.

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