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CVE-2018-8218

25
FAUCET Score

CVE-2018-8218 describes a denial of service vulnerability in Microsoft Hyper-V Network Switch affecting Windows 10 and Windows Server 2016. A privileged user on a guest operating system can trigger this by providing malformed input, leading to a high-impact denial of service on the host server. With a CVSS score of 7.7 (HIGH), this vulnerability is remotely exploitable with low attack complexity and requires low privileges. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion, though it was addressed in the June 2018 Patch Tuesday.

Impacted Technologies

VendorProductVersion(s)CPE
1709CPE matchmatch criteria
cpe:2.3:o:microsoft:windows_10:1709:*:*:*:*:*:*:*
1709CPE matchmatch criteria
cpe:2.3:o:microsoft:windows_server_2016:1709:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.7HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.1
Impact Score
4.0
CvssVersion
3.0

Exploit Intelligence

EPSS Score
7.17%
Probability of exploitation in next 30 days
EPSS Percentile
93.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0717 is in the 93rd percentile among its peer group of 17,844 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

microsoftpatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: Windows 10 Version 1709 for x64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Windows Server, version 1709 (Server Core Installation)
View patch

Vendor Advisories (1)

microsoft2018-Jun/CVE-2018-8218Important

Windows Hyper-V Denial of Service Vulnerability

Jun 12, 2018

References

portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2018-8218
PatchVendor Advisory
securityfocus.com / bid/104402
Third Party AdvisoryVDB Entry
securitytracker.com / id/1041110
Third Party AdvisoryVDB Entry