CVE-2018-6947

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2022-05-13. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
7.8EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 3.1%CVSS: 7.8Exploit: Elevated riskExposed services: Not assessed

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

An uninitialised stack variable in the nxfuse component that is part of the Open Source DokanFS library shipped with NoMachine 6.0.66_2 and earlier allows a local low privileged user to gain elevation of privileges on Windows 7 (32 and 64bit), and denial of service for Windows 8 and 10.

CVSS v3
7.8
EG Score
7.8HIGHmedium confidence
EG Risk
56
EG Risk 56/100CISA 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
Severity78% × 45%
Exploitation40% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track* or Attend at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
3.1%
EPSS %ILE
87th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* or Attend at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation public PoC (EG-KEV: elevated) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 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

February 28, 2018

Last Modified

November 21, 2024

Advisory Details (6)

Auto-updated Sep 29, 2026
🔬 Proof of concept available. No fix on record yet.
generic

Vulnerability in OSS nxfuse component (version 5) – Knowledge Base

https://www.nomachine.com/SU02P00194
generic

Fidus Information Security

https://www.fidusinfosec.com/nomachine-road-code-execution-without-fuzzing-cve-2018-6947/
generic🟡 PoC Available

NoMachine < 6.0.80 (x64) - 'nxfuse' Privilege Escalation - Windows_x86-64 local Exploit

https://www.exploit-db.com/exploits/44168/
generic🟡 PoC Available

NoMachine < 6.0.80 (x86) - 'nxfuse' Privilege Escalation - Windows_x86 local Exploit

https://www.exploit-db.com/exploits/44167/
generic

Trouble Report no longer available – Knowledge Base

https://www.nomachine.com/TR02P08408
generic

Vulnerability in OSS nxfuse component – Knowledge Base

https://www.nomachine.com/SU02P00195

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 25× 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 154 total refreshes for this CVE.

  1. 2026-10-09 20:03 UTCEPSS rescore
  2. 2026-10-08 16:37 UTCEPSS rescore
  3. 2026-10-07 23:42 UTCEPSS rescore
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  8. 2026-10-01 19:44 UTCEPSS rescore
  9. 2026-09-30 14:59 UTCEPSS rescore
  10. 2026-09-30 10:04 UTCEG score recompute
  11. 2026-09-29 15:12 UTCEPSS rescore
  12. 2026-09-28 13:46 UTCEPSS rescore
  13. 2026-09-27 13:40 UTCEPSS rescore
  14. 2026-09-26 15:53 UTCEPSS rescore
  15. 2026-09-24 13:59 UTCEPSS rescore
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  1. 2026-09-06 13:44 UTCEPSS rescore
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  5. 2026-09-01 03:32 UTCEPSS rescore
  6. 2026-08-30 19:13 UTCEPSS rescore
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  8. 2026-08-28 21:36 UTCEPSS rescore
  9. 2026-08-27 14:21 UTCEPSS rescore
  10. 2026-08-26 14:42 UTCEPSS rescore
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  18. 2026-08-16 14:52 UTCEPSS rescore
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  21. 2026-08-13 21:56 UTCEPSS rescore
  22. 2026-08-12 13:47 UTCEPSS rescore
  23. 2026-08-09 13:43 UTCEPSS rescore
  24. 2026-08-08 16:32 UTCEPSS rescore
  25. 2026-08-07 16:23 UTCEPSS rescore
  26. 2026-08-06 13:42 UTCEPSS rescore
  27. 2026-08-04 15:05 UTCEPSS rescore
  28. 2026-08-04 10:33 UTCEPSS rescore
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  40. 2026-07-23 14:15 UTCEPSS rescore
  41. 2026-07-23 14:15 UTCEPSS rescore
  42. 2026-07-23 01:37 UTCEG score recompute
  43. 2026-07-22 22:17 UTCEG score recompute
  44. 2026-07-22 14:05 UTCEPSS rescore
  45. 2026-07-21 15:22 UTCEPSS rescore
  46. 2026-07-20 17:04 UTCEPSS rescore
  47. 2026-07-20 17:04 UTCEPSS rescore
  48. 2026-07-19 14:28 UTCEPSS rescore
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  50. 2026-07-19 02:26 UTCEPSS rescore
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  52. 2026-07-16 16:59 UTCEPSS rescore
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  54. 2026-07-15 16:55 UTCEPSS rescore
  55. 2026-07-15 01:56 UTCEPSS rescore
  56. 2026-07-13 22:27 UTCEPSS rescore
  57. 2026-07-13 06:10 UTCEPSS rescore
  58. 2026-07-12 05:43 UTCEPSS rescore
  59. 2026-07-09 19:06 UTCEPSS rescore
  60. 2026-07-08 15:11 UTCEPSS rescore
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  62. 2026-07-07 13:42 UTCEPSS rescore
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  64. 2026-07-06 16:25 UTCEPSS rescore
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  70. 2026-07-01 15:03 UTCEPSS rescore
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  72. 2026-06-30 23:20 UTCEPSS rescore
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  74. 2026-06-28 04:53 UTCEPSS rescore
  75. 2026-06-28 04:53 UTCEPSS rescore

Publicly available exploits

(2 references)

Working exploit code is in the public domain (2 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-44167
    First seen Feb 22, 2018

    NoMachine < 6.0.80 (x86) - 'nxfuse' Privilege Escalation

    Open source ↗
  • Exploit-DBEDB-44168
    First seen Feb 22, 2018

    NoMachine < 6.0.80 (x64) - 'nxfuse' Privilege Escalation

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2018-6947?
CVE-2018-6947 is a high vulnerability published on February 28, 2018. An uninitialised stack variable in the nxfuse component that is part of the Open Source DokanFS library shipped with NoMachine 6.0.66_2 and earlier allows a local low privileged user to gain elevation of privileges on Windows 7 (32 and 64bit), and denial of service for Windows 8 and 10.
When was CVE-2018-6947 disclosed?
CVE-2018-6947 was first published on February 28, 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-2018-6947 actively exploited?
CVE-2018-6947 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 3.1% probability of exploitation in the next 30 days (87th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2018-6947?
CVE-2018-6947 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2018-6947?
No fix for CVE-2018-6947 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix.

Dependency Blast Radius

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