CVE-2025-27491

7.1

HIGH CVSS 3.1

Hyper-V Use After Free Remote Code Execution

Description

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

INFO

Published Date :

April 8, 2025, 6:16 p.m.

Last Modified :

July 8, 2025, 5:16 p.m.

Remotely Exploit :

Yes !

Source :

[email protected]

Affected Products

The following products are affected by CVE-2025-27491 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID	Vendor	Product
1	Microsoft	windows_server_2016
2	Microsoft	windows_server_2019
3	Microsoft	windows_10_1607
4	Microsoft	windows_10_1809
5	Microsoft	windows_10_21h2
6	Microsoft	windows_10_22h2
7	Microsoft	windows_server_2022
8	Microsoft	windows_11_22h2
9	Microsoft	windows_10_1507
10	Microsoft	windows
11	Microsoft	windows_11_23h2
12	Microsoft	windows_server_2022_23h2
13	Microsoft	windows_server_23h2
14	Microsoft	windows_11_24h2
15	Microsoft	windows_server_2025

: Total Affected Vendor : 1 | Products : 15

CVSS Scores

The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.

Score	Version	Severity	Vector	Exploitability Score	Impact Score	Source
	CVSS 3.1	HIGH				[email protected]

Solution

This vulnerability in Microsoft Hyper-V allows for remote code execution; applying the latest security updates will address this issue.

Apply the relevant security update to address the vulnerability.
Reboot the system if required by the update.

References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-27491.

URL	Resource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-27491	Vendor Advisory

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-27491 is associated with the following CWEs:

CWE-416: Use After Free

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-27491 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-27491 vulnerability anywhere in the article.

CrowdStrike.com

April 2025 Patch Tuesday: One Zero-Day and 11 Critical Vulnerabilities Among 121 CVEs

Microsoft has addressed 121 vulnerabilities in its April 2025 security update release. This month's patches include fixes for one actively exploited zero-day vulnerability and 11 Critical vulnerabilit ...

Published Date: Apr 28, 2025 (3 months, 3 weeks ago)

CrowdStrike.com

April 2025 Patch Tuesday: One Zero-Day and 11 Critical Vulnerabilities Among 121 CVEs

Published Date: Apr 28, 2025 (3 months, 3 weeks ago)

CrowdStrike.com

April 2025 Patch Tuesday: One Zero-Day and 11 Critical Vulnerabilities Among 121 CVEs

Published Date: Apr 28, 2025 (3 months, 3 weeks ago)

CrowdStrike.com