November 13, 2026 Follow Egret
CVE-2018-8414 · CVE record: PUBLISHED

Microsoft Windows Shell Remote Code Execution Vulnerability

Microsoft Windows 10 Servers, Microsoft Windows 10

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.

Exploitation evidence

Known exploited · CISA KEV listed

Added 2022-03-25. Ransomware campaign use: Unknown.

CISA required action: Apply updates per vendor instructions.

CISA due date: 2022-04-15. This is the catalog’s deadline, not an assessment of your organization’s exposure.

KEV checked 13 Nov 2026, 00:20 Jerusalem · Original catalog ↗

Reported products and versions

Microsoft / Windows 10 Servers

Default status: Not specified

  • affected: version 1709 (Server Core Installation)
  • affected: version 1803 (Server Core Installation)

Microsoft / Windows 10

Default status: Not specified

  • affected: Version 1703 for 32-bit Systems
  • affected: Version 1703 for x64-based Systems
  • affected: Version 1709 for 32-bit Systems
  • affected: Version 1709 for x64-based Systems
  • affected: Version 1803 for 32-bit Systems
  • affected: Version 1803 for x64-based Systems

Fixes and workarounds

No explicit solution text in the downloaded CVE record. Consult the vendor advisory; unaffected version ranges are shown above as reported, not inferred as a patch recommendation.

Sources and related reporting

CVE Program record ↗ · Download tracked evidence as JSON

Observed change timeline

History begins when Egret first downloads each source. It is not the complete upstream CVE history.

12 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-12",
  "epss": 0.72621,
  "percentile": 0.99451
}
10 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-10",
  "epss": 0.72621,
  "percentile": 0.99448
}
09 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-09",
  "epss": 0.72621,
  "percentile": 0.99447
}
08 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-08",
  "epss": 0.72621,
  "percentile": 0.99447
}
07 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-07",
  "epss": 0.72621,
  "percentile": 0.99447
}
06 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-06",
  "epss": 0.72621,
  "percentile": 0.99447
}
06 Nov 2026, 12:20 Jerusalem · CVE Program record changed

Stored CNA snapshot at this observation.

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05 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
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  "epss": 0.72621,
  "percentile": 0.99446
}
04 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-04",
  "epss": 0.72621,
  "percentile": 0.99445
}
03 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-03",
  "epss": 0.72621,
  "percentile": 0.99444
}
03 Nov 2026, 02:22 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-02",
  "epss": 0.72621,
  "percentile": 0.99443
}
03 Nov 2026, 02:22 Jerusalem · CISA KEV status changed

Stored KEV snapshot at this observation.

{
  "cveID": "CVE-2018-8414",
  "cwes": [
    "CWE-20"
  ],
  "dateAdded": "2022-03-25",
  "dueDate": "2022-04-15",
  "forensicTriage": "No",
  "knownRansomwareCampaignUse": "Unknown",
  "notes": "https://nvd.nist.gov/vuln/detail/CVE-2018-8414",
  "product": "Windows",
  "requiredAction": "Apply updates per vendor instructions.",
  "shortDescription": "A remote code execution vulnerability exists when the Windows Shell does not properly validate file paths.",
  "vendorProject": "Microsoft",
  "vulnerabilityName": "Microsoft Windows Shell Remote Code Execution Vulnerability"
}
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