CVE-2018-0686

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2022-05-14. NVD baseline CVSS 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
8.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 8.8Exploit: NoneExposed: 0

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

Denbun by NEOJAPAN Inc. (Denbun POP version V3.3P R4.0 and earlier, Denbun IMAP version V3.3I R4.0 and earlier) allows remote authenticated attackers to upload and execute any executable files via unspecified vectors.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
—
EPSS
71.5%
KEV
Not listed

Published

November 15, 2018

Last Modified

November 21, 2024

References (6)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 44× 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.

  1. 2026-07-22 22:11 UTCEG score recompute
  2. 2026-07-22 14:04 UTCEPSS rescore
  3. 2026-07-21 15:21 UTCEPSS rescore
  4. 2026-07-20 17:04 UTCEPSS rescore
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  1. 2026-07-06 02:20 UTCEPSS rescore
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  8. 2026-06-30 23:19 UTCEPSS rescore
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  37. 2026-06-10 22:15 UTCEPSS rescore
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  39. 2026-06-08 14:14 UTCEPSS rescore
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  41. 2026-06-07 15:22 UTCEPSS rescore
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  43. 2026-06-06 13:45 UTCEPSS rescore
  44. 2026-06-06 13:45 UTCEPSS rescore
  45. 2026-06-05 22:44 UTCEPSS rescore
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  49. 2026-06-04 13:10 UTCEPSS rescore
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  51. 2026-06-02 20:11 UTCEPSS rescore
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  53. 2026-06-01 13:49 UTCEPSS rescore
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  55. 2026-05-31 22:28 UTCEPSS rescore
  56. 2026-05-31 00:14 UTCEPSS rescore
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  58. 2026-05-29 13:41 UTCEPSS rescore
  59. 2026-05-28 13:42 UTCEPSS rescore
  60. 2026-05-28 13:42 UTCEPSS rescore
  61. 2026-05-28 01:04 UTCEG score recompute
  62. 2026-05-28 01:04 UTCGHSA enrichment
  63. 2026-05-27 13:38 UTCEPSS rescore
  64. 2026-05-27 13:38 UTCEPSS rescore
  65. 2026-05-26 13:42 UTCEPSS rescore
  66. 2026-05-26 07:17 UTCEPSS rescore
  67. 2026-05-26 07:17 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2018-0686?
CVE-2018-0686 is a high vulnerability published on November 15, 2018. Denbun by NEOJAPAN Inc. (Denbun POP version V3.3P R4.0 and earlier, Denbun IMAP version V3.3I R4.0 and earlier) allows remote authenticated attackers to upload and execute any executable files via unspecified vectors.
When was CVE-2018-0686 disclosed?
CVE-2018-0686 was first published in the National Vulnerability Database on November 15, 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-2018-0686 actively exploited?
CVE-2018-0686 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 71.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2018-0686?
CVE-2018-0686 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2018-0686?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-0686, 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.

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