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Vulnerabilities

Vulnerability · CVE-2018-8414

Microsoft Windows Shell Remote Code Execution Vulnerability

Published Aug 14, 2018 · catalog updated Jun 16, 2026 · Microsoft Windows

Patch now

CVE-2018-8414 is in the CISA known-exploited catalog, due Apr 15, 2022. Confirm Microsoft Windows against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
High8.8
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
72.91%
Remediation
Remediation guidance
Affected products
cpe microsoft/windows 10 1703 · cpe microsoft/windows 10 1709 · cpe microsoft/windows 10 1803 · cpe microsoft/windows server 1709 · cpe microsoft/windows server 1803 · vendor Microsoft Windows

A remote code execution vulnerability exists when the Windows Shell does not properly validate file paths, aka "Windows Shell Remote Code Execution Vulnerability." This affects Windows 10 Servers, Windows 10.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe microsoft/windows 10 1703version unspecified
  • cpe microsoft/windows 10 1709version unspecified
  • cpe microsoft/windows 10 1803version unspecified
  • cpe microsoft/windows server 1709version unspecified
  • cpe microsoft/windows server 1803version unspecified
  • vendor Microsoft Windowsversion unspecified

How to fix CVE-2018-8414

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2018-8414 is in the CISA known-exploited catalog, due Apr 15, 2022. Confirm Microsoft Windows against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply updates per vendor instructions.

What should an analyst verify?

CWE-20: Improper Input Validation. EPSS 72.91%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Windows security

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. Aug 15, 2018 · Catalog

    Detected

    A remote code execution vulnerability exists when the Windows Shell does not properly validate file paths, aka "Windows Shell Remote Code Execution Vulnerability." This affects Windows 10 Servers, Windows 10.

  2. Mar 25, 2022 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. Apr 15, 2022 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Jun 16, 2026 · Catalog

    Updated

    A remote code execution vulnerability exists when the Windows Shell does not properly validate file paths, aka "Windows Shell Remote Code Execution Vulnerability." This affects Windows 10 Servers, Windows 10.

Sources

  • CISA KEVConfirmed exploitationCVE-2018-8414

    A remote code execution vulnerability exists when the Windows Shell does not properly validate file paths.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2018-8414

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2018-8414

    30-day exploitation probability 72.9%

    first.org
  • NIST NVDVulnerability recordCVE-2018-8414

    A remote code execution vulnerability exists when the Windows Shell does not properly validate file paths, aka "Windows Shell Remote Code Execution Vulnerability." This affects Windows 10 Servers, Windows 10.

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2018-8414

    A remote code execution vulnerability exists when the Windows Shell does not properly validate file paths.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.