CVE-2026-20922 | Severity.io

Description

Heap-based buffer overflow in Windows NTFS allows an authorized attacker to execute code locally.

Related CPE's

o

microsoft

windows_10_1607

2

o

microsoft

windows_10_1809

2

windows_10_21h2

Vulnerable

windows_10_22h2

Vulnerable

windows_11_23h2

Vulnerable

windows_11_24h2

Vulnerable

windows_11_25h2

Vulnerable

o

microsoft

windows_server_2008

3

o

microsoft

windows_server_2012

2

windows_server_2016

Vulnerable

windows_server_2019

Vulnerable

windows_server_2022

Vulnerable

windows_server_2022_23h2

Vulnerable

windows_server_2025

Vulnerable

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20922

Vendor Advisory

Weaknesses

[email protected]

Primary

CWE-122

CVSS impact metrics

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

7.8 · High

Information

Source identifier

[email protected]

Vulnerability status

Analyzed

Published

2026-01-13T18:16:18.633Z

2 days ago

Last modified

2026-01-15T21:03:37.457Z

3 hours ago