CVE-2026-20825 | Severity.io

Description

Improper access control in Windows Hyper-V allows an authorized attacker to disclose information locally.

Related CPE's

windows_10_1809

Vulnerable

windows_10_21h2

Vulnerable

windows_10_22h2

Vulnerable

windows_11_23h2

Vulnerable

windows_11_24h2

Vulnerable

windows_11_25h2

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-2026-20825

Vendor Advisory

Weaknesses

[email protected]

Primary

CWE-284

CVSS impact metrics

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

4.4 · Medium

Information

Source identifier

[email protected]

Vulnerability status

Analyzed

Published

2026-01-13T18:16:09.990Z

44 hours ago

Last modified

2026-01-15T13:18:07.167Z

1 hour ago