CVE tracker / CVE-2026-88245

CVE-2026-88245

CVE-2026-88245 is the Windows Brokering File System Elevation of Privilege Vulnerability. Microsoft rates it Important, CVSS 7.8. It is not in CISA's Known Exploited Vulnerabilities catalog. Published November 10, 2026.

Risk summary

HighElevation of Privilege
7.8
CVSS v3 base
High
Severity
Important
Microsoft's rating
Less Likely
Microsoft: exploitation
No
In CISA KEV

Microsoft describes it: “Missing authentication for critical function in Windows Brokering File System allows an authorized attacker to elevate privileges locally.”

How to fix it

Microsoft lists 2 affected products and the update that fixes each:

What Microsoft changed

Details

Weakness
CWE-306: Missing Authentication for Critical Function
Publicly disclosed (Microsoft)
No
Exploited (Microsoft)
No
Known exploited (CISA KEV)
Not listed
Published
November 10, 2026
Last revised
November 10, 2026

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References

Microsoft Security Update Guide NVD CVE record CWE

From Microsoft, CISA, NVD and FIRST data; the Microsoft details were read when this page was opened. Check the references above before you act.