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Critical MSRC-CVE-2025-27491 1 CVE

Windows Hyper-V Remote Code Execution Vulnerability

Published Apr 8, 2025 · Updated Apr 9, 2025 · Revision 2

Summary

Impact: Remote Code Execution. Microsoft rating: Critical. Not known to be exploited — Exploitation Less Likely. Customer action: Required.

Details

According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?
Successful exploitation of this vulnerability requires an attacker to win a race condition.

Are the updates for Windows 10 for x64-based Systems and Windows 10 for 32-bit Systems currently available?
Yes. As of April 9, 2025, the security update (5055547) for Windows 10 for x64-based Systems and Windows 10 for 32-bit Systems are available. Customers running Windows 10 should ensure the update is installed to be protected from this vulnerability.

According to the CVSS metric, user interaction is required (UI:R) and privileges required is Low (PR:L). What does that mean for this vulnerability?
An authorized attacker with guest privileges must send a victim a malicious site and convince them to open it.

According to the CVSS metric, privileges required is low (PR:L). What does that mean for this vulnerability?
Any authenticated attacker could trigger this vulnerability. It does not require admin or other elevated privileges.

Security updates
10.0.17763.7136 — https://support.microsoft.com/help/5055519
10.0.20348.3453 — https://support.microsoft.com/help/5055526
10.0.19044.5737 — https://support.microsoft.com/help/5055518
10.0.22621.5189 — https://support.microsoft.com/help/5055528
10.0.26100.3775 — https://support.microsoft.com/help/5055523
10.0.25398.1551 — https://support.microsoft.com/help/5055527
10.0.10240.20978 — https://support.microsoft.com/help/5055547
10.0.14393.7969 — https://support.microsoft.com/help/5055521

Vulnerabilities 1

Revision history

  1. #2

    The security updates for Windows 10 for 32-bit Systems and Windows 10 for x64-based Systems are now available. See the Security Updates table for more information.

  2. #1

    Information published.

References