CVE-2025-27491 | Severity.io

Description

Use after free in Windows Hyper-V allows an authorized attacker to execute code over a network.

Related CPE's

o

microsoft

windows_10_1507

2

o

microsoft

windows_10_1607

2

o

microsoft

windows_10_1809

2

windows_10_21h2

Vulnerable

windows_10_22h2

Vulnerable

windows_11_22h2

Vulnerable

windows_11_23h2

Vulnerable

windows_11_24h2

Vulnerable

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-2025-27491

Vendor Advisory

Weaknesses

[email protected]

Secondary

CWE-416

CVSS impact metrics

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

7.1 · High

Information

Source identifier

[email protected]

Vulnerability status

Analyzed

Published

2025-04-08T18:16:00.140Z

1 year ago

Last modified

2026-06-17T09:03:42.057Z

3 weeks ago