Description

Heap-based buffer overflow in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.

INFO

Published Date :

2026-01-13T17:56:44.942Z

Last Modified :

2026-01-20T23:03:54.187Z

Source :

microsoft
AFFECTED PRODUCTS

The following products are affected by CVE-2026-20940 vulnerability.

Vendors Products
Microsoft
  • Windows 10 1607
  • Windows 10 1809
  • Windows 10 21h2
  • Windows 10 21h2
  • Windows 10 22h2
  • Windows 10 22h2
  • Windows 11 23h2
  • Windows 11 23h2
  • Windows Server 2008
  • Windows Server 2008 R2
  • Windows Server 2008 Sp2
  • Windows Server 2012
  • Windows Server 2012 R2
  • Windows Server 2016
  • Windows Server 2019
  • Windows Server 2022
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-20940.

URL Resource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20940 cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact