PT-2025-15549 · Microsoft · Windows Hyper-V+1

Chief Banana · Published 2025-04-08 · Updated 2025-04-10 · CVE-2025-27491

Positive Technologies (AI Summary)

CVSS v3.1

7.1

High

Base vector

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

Name of the Vulnerable Software and Affected Versions: Windows Hyper-V (affected versions not specified)

Description: The issue is related to a use after free condition in Windows Hyper-V, which can be exploited by a remote attacker to execute arbitrary code. This can potentially allow an attacker to impact the system. The estimated number of potentially affected devices worldwide is not provided. There is no information about real-world incidents where this issue was exploited.

Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

BDU:2025-04046

CVE-2025-27491

Affected Products

Windows

Windows Hyper-V

References · 11

• https://osv.dev/vulnerability/CVE-2025-27491 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-27491 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-27491 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2025-27491 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-04046 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-27491 · Security Note
• https://twitter.com/CVEnew/status/1909665155538927705 · Twitter Post
• https://t.me/msrcreports/1972 · Telegram Post
• https://twitter.com/JensHilbig/status/1909880249807941887 · Twitter Post
• https://t.me/avleonovcom/1524 · Telegram Post
• https://reddit.com/r/AskWindowsQuery/comments/1juyfyw/microsoft_patch_tuesday_update_april_2025_121 · Reddit Post