Race Condition Vulnerability in Microsoft Workspace Broker
CVE-2025-49665

7.8HIGH

Key Information:

Vendor

Microsoft
Status
Windows 10 Version 1809
Windows Server 2019
Windows Server 2019 (server Core Installation)
Windows Server 2022
Vendor
CVE Published:
8 July 2025

What is CVE-2025-49665?

The vulnerability in Microsoft Workspace Broker is caused by improper synchronization during concurrent execution of shared resources, potentially enabling an authorized attacker to elevate their privileges on the local system. This flaw underscores the importance of robust synchronization mechanisms in software design, as it exposes systems to security risks that can be exploited if left unaddressed.

Affected Version(s)

Windows 10 Version 1507 32-bit Systems 10.0.10240.0 < 10.0.10240.21073

Windows 10 Version 1607 32-bit Systems 10.0.14393.0 < 10.0.14393.8246

Windows 10 Version 1809 32-bit Systems 10.0.17763.0 < 10.0.17763.7558

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisory

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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CVE-2025-49665 : Race Condition Vulnerability in Microsoft Workspace Broker