What’s Vulnerable › Vulnerabilities

CVE-2018-8226

• Severity: high (CVSS 7.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 13.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-06-14 · updated 2026-06-17

Description

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 products

• Microsoft Windows 10 Version 1607: 1607, 1703, 1709, 1803
• Microsoft Windows Server 1803: all versions
• Microsoft Windows Server 2016: 1709
• Microsoft Windows 10 Version 1607: 32-bit Systems, Version 1607 for 32-bit Systems, Version 1607 for x64-based Systems, Version 1703 for 32-bit Systems, Version 1703 for x64-based Systems, Version 1709 for 32-bit Systems (+4)
• Microsoft Windows 10 Servers: version 1709 (Server Core Installation), version 1803 (Server Core Installation)
• Microsoft Windows Server 2016: (Server Core installation)

References

• http://www.securityfocus.com/bid/104361
• http://www.securitytracker.com/id/1041094
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8226
• http://www.securityfocus.com/bid/104361
• http://www.securitytracker.com/id/1041094
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8226

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