CVE-2018-8476

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-13. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
9.8EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 65%
CISA-KEV: Not listedEPSS PROB: 65%CVSS: 9.8Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

A remote code execution vulnerability exists in the way that Windows Deployment Services TFTP Server handles objects in memory, aka "Windows Deployment Services TFTP Server Remote Code Execution Vulnerability." This affects Windows Server 2012 R2, Windows Server 2008, Windows Server 2012, Windows Server 2019, Windows Server 2016, Windows Server 2008 R2, Windows 10 Servers.

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
75
EG Risk 75/100CISA SSVC

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
Severity98% × 45%
Exploitation65% × 40%
Automatability30% × 15%
CISA SSVC: Track at low, Track* at medium and Attend at high mission impact.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
65%
EPSS %ILE
99th
KEV
Not listed

CISA SSVCTrack at low, Track* at medium and Attend at high mission impact.

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (EG-KEV: elevated) · Automatable unknown (not published for this CVE) · Technical impact total (CVSS ≥ 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

November 14, 2018

Last Modified

November 21, 2024

Advisory Details (4)

Auto-updated Oct 5, 2026
Patch available. Sources: microsoft.
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-2018-8476
generic

CVE-2018-8476 - PSIRT.COM

http://www.securityfocus.com/bid/105774
generic

PXE Dust: Finding a Vulnerability in Windows Servers Deployment Services - Check Point Research

https://research.checkpoint.com/2019/pxe-dust-finding-a-vulnerability-in-windows-servers-deployment-services/
generic
http://www.securitytracker.com/id/1042109

Vendor Advisories for CVE-2018-8476(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 19× 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 114 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2018-8476?
CVE-2018-8476 is a critical vulnerability published on November 14, 2018. A remote code execution vulnerability exists in the way that Windows Deployment Services TFTP Server handles objects in memory, aka "Windows Deployment Services TFTP Server Remote Code Execution Vulnerability." This affects Windows Server 2012 R2, Windows Server 2008, Windows Server 2012, Windows…
When was CVE-2018-8476 disclosed?
CVE-2018-8476 was first published on November 14, 2018, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2018-8476 actively exploited?
CVE-2018-8476 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 65% probability of exploitation in the next 30 days (99th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2018-8476?
CVE-2018-8476 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2018-8476?
A fix for CVE-2018-8476 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2018-8476 are linked in the Vendor Advisories panel on this page.

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