Race Condition Vulnerability in Microsoft Brokering File System
CVE-2026-32091

8.4HIGH

Key Information:

Vendor

Microsoft
Status
Windows 10 Version 1607
Windows 10 Version 1809
Windows 10 Version 21h2
Windows 10 Version 22h2
Vendor
CVE Published:
14 April 2026

What is CVE-2026-32091?

The Microsoft Brokering File System is prone to a race condition due to improper synchronization when executing shared resources. This vulnerability allows an unauthorized attacker to gain elevated privileges locally, potentially leading to unauthorized access and control over system resources. Organizations are advised to apply the latest security patches to mitigate this risk.

Affected Version(s)

Windows 10 Version 1607 32-bit Systems 10.0.14393.0 < 10.0.14393.9060

Windows 10 Version 1809 32-bit Systems 10.0.17763.0 < 10.0.17763.8644

Windows 10 Version 21H2 32-bit Systems 10.0.19044.0 < 10.0.19044.7184

References

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

CVSS V3.1

Score:
8.4
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.