A remote code execution vulnerability exists when Windows Hyper-V on a host server fails to properly validate input from an authenticated u…

published 2019-01-08 7y ago modified 2026-06-17 4mo ago also EUVD-2019-1320

cvss: 8.4; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 4.5%; EPSS 4.5% chance of exploitation in 30 days, percentile 91%
public exploits: 0; none known

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 10 Servers, Windows 10, Windows Server 2019. This CVE ID is unique from CVE-2019-0551.

Patch / fix

links 1

portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0550 advisory

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Exploit prediction

4.46% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.0	8.4	CVSS:3.0/AV:A/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
NVD	2.0	7.7	AV:A/AC:L/Au:S/C:C/I:C/A:C

Affected products

Microsoft Windows 10 Servers
Microsoft Windows 10
Microsoft Windows Server 2019

Classification

Weakness

CWE-20 Improper Input Validation

References

portal.msrc.microsoft.com /en-US/security-guidance/advisory/CVE-2019-0550
patch, vendor-advisory
securityfocus.com /bid/106385
vdb-entry, third-party-advisory

Sources

CVE List CVE-2019-0550
NVD CVE-2019-0550

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