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.

CVSS v3.1

7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1

7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0

7.2 HIGHAV:L/AC:L/Au:N/C:C/I:C/A:C

EPSS

18.39% chance of exploitation in the next 30 days, 97th percentile

CISA KEV

added 2022-03-28, used in ransomware campaigns

Published

2018-09-13

Updated

2025-10-21

Proof-of-concept exploits (3)

• https://blog.0patch.com/2018/08/how-we-micropatched-publicly-dropped.html
• OneLogicalMyth/zeroday-powershell327★ · 2018-09-12
• sourceincite/CVE-2018-844080★ · 2018-10-31

Metasploit modules (1)

• rapid7/metasploit-framework/blob/master/modules/exploits/windows/local/alpc_taskscheduler…

References

• CVE Record
• NVD entry

Related

• CVE-2021-24085
• CVE-2022-22956
• CVE-2022-22960
• CVE-2022-31672
• CVE-2022-31674
• CVE-2022-31675