MSRC-CVE-2026-62705 — Microsoft Brokering File System Elevation of Privilege Vulnerability

Summary

Impact: Elevation of Privilege. Microsoft rating: Important. Not known to be exploited — Exploitation Less Likely. Customer action: Required.

Details

According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?
Successful exploitation of this vulnerability requires an attacker to win a race condition.

What privileges could be gained by an attacker who successfully exploited this vulnerability?
An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.

Security updates
10.0.26200.9168 — https://support.microsoft.com/help/5121003
10.0.26200.9106 — https://support.microsoft.com/help/5120994
10.0.28000.2704 — https://support.microsoft.com/help/5121000

Vulnerabilities 1

High 7.0

CVE-2026-62705

Microsoft Brokering File System Elevation of Privilege Vulnerability

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

Microsoft Windows 11 Version 24H2 Windows 11 Version 25H2 Windows 11 version 26H1 Windows

Aug 11, 2026

Revision history

2026-08-19 #2
Corrected the CVE title from **Windows Bind Filter Driver Elevation of Privilege Vulnerability** to **Microsoft Brokering File System Elevation of Privilege Vulnerability** and updated the acknowledgement. These are informational changes only.
2026-08-11 #1
Information published.

References

CVE-2026-62705 Microsoft Brokering File System Elevation of Privilege Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62705
Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
Common Vulnerability Scoring System
https://www.first.org/cvss