CVE-2018-8414

CRITICALNVD 8.89.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2022-03-25), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 8.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 5 sources updated this weekExploited in the wild
9.0EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 74%CVSS: 8.8Exploit: cisa kev · ssvc active · epss top5pct · epss high · public exploitExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
8.8
EG Score
9.0(high)
EG Risk
81(Attend)
EG Risk 81/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity90% × 45%
Exploitation100% × 40%
Automatability0% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
74%
EPSS %ILE
99%
KEV
⚠ Exploited

Published

August 15, 2018

Last Modified

October 28, 2025

Advisory Details (4)

Auto-updated Jun 2, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: microsoft, cisa.
cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-8414
microsoft Patch Available

Security Update Guide - Microsoft Security Response Center

Security Update Guide - Microsoft Security Response Center. Patch available via Microsoft Security Update

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8414
generic
http://www.securitytracker.com/id/1041458
generic
http://www.securityfocus.com/bid/105016

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 100× in last 7d / 375× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 1,113 total refreshes for this CVE.

  1. 2026-08-21 19:17 UTCGHSA enrichment
  2. 2026-08-21 16:49 UTCCISA KEV update
  3. 2026-08-21 15:40 UTCGHSA enrichment
  4. 2026-08-21 12:03 UTCVendor advisory
  5. 2026-08-21 12:03 UTCGHSA enrichment
  6. 2026-08-21 08:26 UTCVendor advisory
  7. 2026-08-21 08:26 UTCGHSA enrichment
  8. 2026-08-21 04:49 UTCVendor advisory
  9. 2026-08-21 04:49 UTCGHSA enrichment
  10. 2026-08-21 01:11 UTCEG score recompute
  11. 2026-08-21 01:11 UTCVendor advisory
  12. 2026-08-21 01:11 UTCGHSA enrichment
  13. 2026-08-20 22:51 UTCEPSS rescore
  14. 2026-08-20 21:34 UTCVendor advisory
  15. 2026-08-20 21:34 UTCGHSA enrichment
  16. 2026-08-20 17:58 UTCVendor advisory
  17. 2026-08-20 17:58 UTCGHSA enrichment
  18. 2026-08-20 17:06 UTCCISA KEV update
  19. 2026-08-20 14:21 UTCVendor advisory
  20. 2026-08-20 14:21 UTCGHSA enrichment
  21. 2026-08-20 10:45 UTCVendor advisory
  22. 2026-08-20 10:45 UTCGHSA enrichment
  23. 2026-08-20 07:08 UTCVendor advisory
  24. 2026-08-20 07:08 UTCGHSA enrichment
  25. 2026-08-20 03:32 UTCGHSA enrichment
Show 75 more
  1. 2026-08-19 23:55 UTCVendor advisory
  2. 2026-08-19 23:55 UTCGHSA enrichment
  3. 2026-08-19 20:18 UTCEG score recompute
  4. 2026-08-19 20:18 UTCVendor advisory
  5. 2026-08-19 20:18 UTCGHSA enrichment
  6. 2026-08-19 17:33 UTCCISA KEV update
  7. 2026-08-19 17:00 UTCEPSS rescore
  8. 2026-08-19 16:41 UTCVendor advisory
  9. 2026-08-19 16:40 UTCGHSA enrichment
  10. 2026-08-19 13:03 UTCVendor advisory
  11. 2026-08-19 13:03 UTCGHSA enrichment
  12. 2026-08-19 09:21 UTCVendor advisory
  13. 2026-08-19 09:21 UTCGHSA enrichment
  14. 2026-08-19 05:43 UTCVendor advisory
  15. 2026-08-19 05:43 UTCGHSA enrichment
  16. 2026-08-19 02:06 UTCVendor advisory
  17. 2026-08-19 02:06 UTCGHSA enrichment
  18. 2026-08-18 22:29 UTCGHSA enrichment
  19. 2026-08-18 18:53 UTCVendor advisory
  20. 2026-08-18 18:53 UTCGHSA enrichment
  21. 2026-08-18 16:58 UTCCISA KEV update
  22. 2026-08-18 15:15 UTCVendor advisory
  23. 2026-08-18 15:15 UTCGHSA enrichment
  24. 2026-08-18 11:39 UTCVendor advisory
  25. 2026-08-18 11:39 UTCGHSA enrichment
  26. 2026-08-18 08:02 UTCGHSA enrichment
  27. 2026-08-18 04:22 UTCGHSA enrichment
  28. 2026-08-18 00:45 UTCVendor advisory
  29. 2026-08-18 00:45 UTCGHSA enrichment
  30. 2026-08-17 21:06 UTCVendor advisory
  31. 2026-08-17 21:05 UTCGHSA enrichment
  32. 2026-08-17 17:29 UTCVendor advisory
  33. 2026-08-17 17:28 UTCGHSA enrichment
  34. 2026-08-17 13:56 UTCCISA KEV update
  35. 2026-08-17 13:51 UTCGHSA enrichment
  36. 2026-08-17 10:14 UTCVendor advisory
  37. 2026-08-17 10:14 UTCGHSA enrichment
  38. 2026-08-17 06:38 UTCVendor advisory
  39. 2026-08-17 06:38 UTCGHSA enrichment
  40. 2026-08-17 03:02 UTCVendor advisory
  41. 2026-08-17 03:02 UTCGHSA enrichment
  42. 2026-08-16 23:25 UTCVendor advisory
  43. 2026-08-16 23:25 UTCGHSA enrichment
  44. 2026-08-16 19:48 UTCVendor advisory
  45. 2026-08-16 19:48 UTCGHSA enrichment
  46. 2026-08-16 16:11 UTCVendor advisory
  47. 2026-08-16 16:11 UTCGHSA enrichment
  48. 2026-08-16 12:34 UTCVendor advisory
  49. 2026-08-16 12:34 UTCGHSA enrichment
  50. 2026-08-16 08:57 UTCVendor advisory
  51. 2026-08-16 08:57 UTCGHSA enrichment
  52. 2026-08-16 05:20 UTCEG score recompute
  53. 2026-08-16 05:20 UTCVendor advisory
  54. 2026-08-16 05:20 UTCGHSA enrichment
  55. 2026-08-16 02:10 UTCEPSS rescore
  56. 2026-08-16 01:44 UTCVendor advisory
  57. 2026-08-16 01:44 UTCGHSA enrichment
  58. 2026-08-15 22:07 UTCVendor advisory
  59. 2026-08-15 22:07 UTCGHSA enrichment
  60. 2026-08-15 18:30 UTCVendor advisory
  61. 2026-08-15 18:30 UTCGHSA enrichment
  62. 2026-08-15 14:53 UTCVendor advisory
  63. 2026-08-15 14:53 UTCGHSA enrichment
  64. 2026-08-15 11:16 UTCVendor advisory
  65. 2026-08-15 11:16 UTCGHSA enrichment
  66. 2026-08-15 07:39 UTCVendor advisory
  67. 2026-08-15 07:39 UTCGHSA enrichment
  68. 2026-08-15 04:02 UTCEG score recompute
  69. 2026-08-15 04:02 UTCVendor advisory
  70. 2026-08-15 04:02 UTCGHSA enrichment
  71. 2026-08-15 01:26 UTCEPSS rescore
  72. 2026-08-15 00:25 UTCVendor advisory
  73. 2026-08-15 00:25 UTCGHSA enrichment
  74. 2026-08-14 20:48 UTCVendor advisory
  75. 2026-08-14 20:48 UTCGHSA enrichment

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCwhereisr0da/CVE-2018-8414-POC
    First seen Aug 24, 2018

    Simple poc of CVE-2018-8414 Windows Package Setting RCE Vulnerability

    Open source ↗

Frequently asked(6)

What is CVE-2018-8414?
CVE-2018-8414 is a critical vulnerability published on August 15, 2018. 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.
When was CVE-2018-8414 disclosed?
CVE-2018-8414 was first published in the National Vulnerability Database on August 15, 2018, with the most recent update on October 28, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2018-8414 actively exploited?
Yes. CISA added CVE-2018-8414 to the Known Exploited Vulnerabilities catalog on March 25, 2022, affecting Microsoft Windows. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2018-8414?
CVE-2018-8414 has a CVSS v3 base score of 8.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2018-8414?
CVE-2018-8414 affects Microsoft Windows. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2018-8414?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-8414, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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