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CVE-2018-8440

An elevation of privilege vulnerability exists when Windows improperly handles calls to Advanced Local Procedure Call (ALPC), aka "Windows ALPC...

Basic Information

CVE State
PUBLISHED
Reserved Date
March 14, 2018
Published Date
September 13, 2018
Last Updated
June 10, 2025
Vendor
Microsoft
Product
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
Description
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.
Tags
windows cisa malware ransomware microsoft metasploit_scanner

CVSS Scores

CVSS v3.1

7.8 - HIGH

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0

7.2

Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C

SSVC Information

Exploitation
active
Technical Impact
total

Exploit Status

Exploited in the Wild
Yes (2022-03-28 00:00:00 UTC) Source
Proof of Concept Available
Yes (added 2018-10-31 17:00:43 UTC) Source
Used in Malware
Yes (added 2022-03-28 00:00:00 UTC) Source

References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8440 https://blog.0patch.com/2018/09/comparing-our-micropatch-with.html https://blog.0patch.com/2018/08/how-we-micropatched-publicly-dropped.html http://www.securitytracker.com/id/1041578 http://www.securityfocus.com/bid/105153

Known Exploited Vulnerability Information

Source Added Date
CISA 2022-03-28 00:00:00 UTC

Scanner Integrations

Scanner URL Date Detected
Metasploit https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/local/alpc_taskscheduler.rb 2025-04-29 11:01:40 UTC

Potential Proof of Concepts

Warning: These PoCs have not been tested and could contain malware. Use at your own risk.

alpc_taskscheduler

Type: metasploit • Created: Unknown

Metasploit module for CVE-2018-8440

sourceincite/CVE-2018-8440

Type: github • Created: 2018-10-31 17:00:43 UTC • Stars: 79

CVE-2018-8440 standalone exploit

Timeline

  • CVE ID Reserved

  • CVE Published to Public

  • Proof of Concept Exploit Available

  • Exploit Used in Malware

  • Added to KEVIntel

  • Detected by Metasploit