01 Record

CVE-2018-8490

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

UnratedPUBLISHEDCNA: microsoft

CNA base scoreUnratedNo CNA CVSS vector

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02 Description

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

03 Exploitation and scoring

Exploitation: Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision: Not assessed by CISA
EPSS probability: 4.12% probability of exploitation activity in the next 30 days.
EPSS percentile: Equal to or higher than the score of 90.3% of scored records. A rank, not a probability.
NVD base score: 8.4 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector: CVSS:3.0/AV:A/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
NVD analysis status: Modified. NVD last modified this record on 2026-06-17.
Red Hat severity: No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2018-10-10 13:00Z8 YR AGO

Last updated

2024-08-05 06:54Z2 YR AGO

Reserved

2018-03-14

Assigning CNA

microsoft

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

CWE-20Improper Input ValidationClass

Data version

5.1

Document digest

13d005a5e611040590f79ee6d941cc142b0ecdc9b4d259d9c442b47e34ddfcb9

05 Affected products

VendorProductVersionsPlatforms

MicrosoftWindows Server 2016(Server Core installation)—

MicrosoftWindows 10Version 1607 for x64-based Systems, Version 1703 for x64-based Systems, Version 1709 for x64-based Systems, Version 1809 for 32-bit Systems, Version 1809 for x64-based Systems, x64-based Systems—

MicrosoftWindows Server 2019(Server Core installation)—

MicrosoftWindows 10 Serversversion 1709 (Server Core Installation)—

06 References

portal.msrc.microsoft.comhttps://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8490x_refsource_CONFIRM
www.securityfocus.com105480http://www.securityfocus.com/bid/105480vdb-entryx_refsource_BID
www.securitytracker.com1041834http://www.securitytracker.com/id/1041834vdb-entryx_refsource_SECTRACK