CVE-2018-8439

8.4 highEPSS 4.3%

A remote code execution vulnerability exists when Windows Hyper-V on a host server fails to properly validate input from an authenticated user on a guest operating system, aka "Windows Hyper-V Remote Code Execution Vulnerability." This affects Windows Server 2012 R2, Windows RT 8.1, Windows Server 2016, Windows 8.1, Windows 10, Windows 10 Servers. This CVE ID is unique from CVE-2018-0965.

Severity

CVSS 3.0

8.4 high

CVSS:3.0/AV:A/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

EPSS: 4.3% chance of exploitation in the next 30 days; higher than 91% of CVEs (scores of 2026-10-31)
CWE: CWE-20
Published: 2018-09-13
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

microsoft:windows_10
microsoft:windows_8.1
microsoft:windows_rt_8.1
microsoft:windows_server_2012
microsoft:windows_server_2016

References

http://www.securityfocus.com/bid/105233
http://www.securitytracker.com/id/1041624
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8439
http://www.securityfocus.com/bid/105233
http://www.securitytracker.com/id/1041624

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