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Findings

CVE-2018-8440

Microsoft Windows Privilege Escalation Vulnerability

Published Sep 12, 2018 · corrected/updated Jun 16, 2026 · microsoft windows 10 1607 · evidence confidence very high

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.

Grounded briefings

Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.

Executive

CVE-2018-8440 is a high public vulnerability record for microsoft windows 10 1607. CISA lists it as known exploited. Published remediation guidance: Apply updates per vendor instructions. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.

System administrator

Identify whether microsoft windows 10 1607 is in your estate, then compare installed versions with the affected ranges. Affected packages or ranges on record: microsoft/windows 10 1607; microsoft/windows 10 1703; microsoft/windows 10 1709; microsoft/windows 10 1803. Published remediation guidance: Apply updates per vendor instructions. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.

Security analyst

Signals on file: CVSS 7.8, EPSS 18.4%. CISA lists it as known exploited. Sources contributing to this record: cisa_kev, cve_org, epss, metasploit. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.

Exploitation and remediation

  • Exploitation evidence

    Confirmed in CISA KEV since Mar 28, 2022. Listed in the CISA Known Exploited Vulnerabilities catalog.

  • Patch and remediation

    Apply updates per vendor instructions. CISA due date Apr 18, 2022.

  • Safe detection guidance

    Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.

Technology hubs

Windows

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 12, 2018 · Catalog

    Detected

    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.

  2. Mar 28, 2022 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. Apr 18, 2022 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Jun 16, 2026 · Catalog

    Updated

    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.

Affected

  • cpe microsoft/windows 10 1607version unspecified
  • cpe microsoft/windows 10 1703version unspecified
  • cpe microsoft/windows 10 1709version unspecified
  • cpe microsoft/windows 10 1803version unspecified
  • cpe microsoft/windows 7version unspecified
  • cpe microsoft/windows 8.1version unspecified
  • cpe microsoft/windows rt 8.1version unspecified
  • cpe microsoft/windows server 2008version unspecified
  • vendor Microsoft Windowsversion unspecified

Sources

  • CISA KEVConfirmed exploitationCVE-2018-8440

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

    cisa.gov
  • CVE.orgVulnerability recordCVE-2018-8440

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2018-8440

    30-day exploitation probability 18.4%

    first.org
  • Metasploit ModulesPublic exploit moduleexploit_windows/local/alpc_taskscheduler

    Public module reference (normal). Module source is not copied into this catalog.

    rapid7.com
  • NIST NVDVulnerability recordCVE-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 Serv

    nvd.nist.gov

References