CVE-2018-8440

An elevation of privilege vulnerability exists when Windows improperly handles calls to Advanced Local Procedure Call (ALPC), aka "Windows ALPC Elevation of Privilege Vulnerability." This affects Windows 7, Windows Server 2012 R2, Windows RT 8.1, Windows Server 2008, Windows Server 2012, Windows 8.1, Windows Server 2016, Windows Server 2008 R2, Windows 10, Windows 10 Servers.

• http://www.securityfocus.com/bid/105153Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1041578Third Party Advisory, VDB Entry
• https://blog.0patch.com/2018/08/how-we-micropatched-publicly-dropped.htmlExploit, Patch, Third Party Advisory
• https://blog.0patch.com/2018/09/comparing-our-micropatch-with.htmlThird Party Advisory
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8440Patch, Vendor Advisory
• http://www.securityfocus.com/bid/105153Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1041578Third Party Advisory, VDB Entry
• https://blog.0patch.com/2018/08/how-we-micropatched-publicly-dropped.htmlExploit, Patch, Third Party Advisory
• https://blog.0patch.com/2018/09/comparing-our-micropatch-with.htmlThird Party Advisory
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8440Patch, Vendor Advisory
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-8440US Government Resource

Published

Sep 13, 2018

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2018-8434An information disclosure vulnerability exists when Windows …
• CVE-2018-8435A security feature bypass vulnerability exists when Windows …
• CVE-2018-8436A denial of service vulnerability exists when Microsoft Hype…
• CVE-2018-8437A denial of service vulnerability exists when Microsoft Hype…
• CVE-2018-8438A denial of service vulnerability exists when Microsoft Hype…
• CVE-2018-8439A remote code execution vulnerability exists when Windows Hy…
• CVE-2018-8441An elevation of privilege vulnerability exists due to an int…
• CVE-2018-8442An information disclosure vulnerability exists when the Wind…
• CVE-2018-8443An information disclosure vulnerability exists when the Wind…
• CVE-2018-8444An information disclosure vulnerability exists in the way th…
• CVE-2018-8445An information disclosure vulnerability exists when the Wind…
• CVE-2018-8446An information disclosure vulnerability exists when the Wind…