An information disclosure vulnerability exists when Windows Hyper-V on a host operating system fails to properly validate input from an aut…

published 2019-12-10 6 y ago modified 2026-06-17 4 mo ago also EUVD-2019-10027

cvss: 6.0; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 6.7%; EPSS 6.7% chance of exploitation in 30 days, percentile 93%
public exploits: 0; none known

An information disclosure vulnerability exists when Windows Hyper-V on a host operating system fails to properly validate input from an authenticated user on a guest operating system, aka 'Windows Hyper-V Information Disclosure Vulnerability'.

Patch / fix

links 1

portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1470 advisory

Exploit prediction

6.67% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.1	6.0	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N
NVD	2.0	4.0	AV:N/AC:L/Au:S/C:P/I:N/A:N

Affected products

Microsoft Windows
Microsoft Windows Server
Microsoft Windows 10 Version 1903 for x64-based Systems
Microsoft Windows Server, version 1903 (Server Core installation)
Microsoft Windows Server, version 1909 (Server Core installation)
Microsoft Windows 10 Version 1909 for x64-based Systems

Classification

Weakness

CWE-20 Improper Input Validation
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

portal.msrc.microsoft.com /en-US/security-guidance/advisory/CVE-2019-1470
patch, vendor-advisory

Sources

CVE List CVE-2019-1470
NVD CVE-2019-1470

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary