CVE-2018-8226: High severity Microsoft Windows 10 vulnerability

Published Jun 14, 2018

Updated

A denial of service vulnerability exists in the HTTP 2.0 protocol stack (HTTP.sys) when HTTP.sys improperly parses specially crafted HTTP 2.0 requests, aka "HTTP.sys Denial of Service Vulnerability." This affects Windows Server 2016, Windows 10, Windows 10 Servers.

Affected Software

8 affected components

Microsoft Windows 10

Microsoft Windows 10=1607

Microsoft Windows 10=1703

Microsoft Windows 10=1709

Microsoft Windows 10=1803

Microsoft Windows Server 1803

Microsoft Windows Server 2016

Microsoft Windows Server 2016=1709

Remediation

Patch Available

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8226

Event History

Jun 14, 2018

CVE Published

via MITRE·12:00 PM

Data Sourced

via MITRE·12:00 PM

DescriptionWeakness

Data Sourced

via NVD·12:29 PM

RemedyDescriptionSeverityAffected Software

Frequently Asked Questions

What is the severity of CVE-2018-8226?

CVE-2018-8226 is classified as a denial of service vulnerability that can impact availability.

How do I fix CVE-2018-8226?

To fix CVE-2018-8226, ensure that your Windows Server or Windows 10 systems are updated with the latest security patches provided by Microsoft.

What products are affected by CVE-2018-8226?

CVE-2018-8226 affects Windows Server 2016 and various versions of Windows 10, including versions 1607, 1703, 1709, and 1803.

What is the impact of exploiting CVE-2018-8226?

Exploiting CVE-2018-8226 can lead to a denial of service condition, rendering the affected system unresponsive.

Is there a workaround for CVE-2018-8226?

Currently, the best workaround for CVE-2018-8226 is to limit HTTP/2 traffic or implement network filters until a security update can be applied.