CVE-2018-1139

HIGHNVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2022-05-13. NVD baseline CVSS 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
8.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 3%CVSS: 8.1Exploit: NoneExposed: 0

A fix is available — apply it.

A flaw was found in the way samba before 4.7.9 and 4.8.4 allowed the use of weak NTLMv1 authentication even when NTLMv1 was explicitly disabled. A man-in-the-middle attacker could use this flaw to read the credential and other details passed between the samba server and client.

CVSS v3
8.1
EG Score
8.1(medium)
EG Risk
—
EPSS
86.4%
KEV
Not listed

Published

August 22, 2018

Last Modified

November 21, 2024

References (18)

Patch Availability(4)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuwinbind (2:4.3.11+dfsg-0ubuntu0.16.04.15) @ xenial2026-05-28ubuntu
redhatsamba-0:4.8.3-4.el72018-10-30redhat
redhatsamba-0:4.7.5-110.el6rhs2018-09-04redhat
redhatsamba-0:4.7.5-110.el7rhgs2018-09-04redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(2)

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

All Vendor Advisories

(4)

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 11× in last 7d / 47× 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 22:12 UTCEG score recompute
  2. 2026-07-22 14:05 UTCEPSS rescore
  3. 2026-07-21 15:22 UTCEPSS rescore
  4. 2026-07-21 06:48 UTCOSV refresh
  5. 2026-07-20 17:04 UTCEPSS rescore
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  1. 2026-07-06 16:24 UTCEPSS rescore
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  3. 2026-07-05 02:27 UTCEPSS rescore
  4. 2026-07-04 06:28 UTCEPSS rescore
  5. 2026-07-04 06:28 UTCEPSS rescore
  6. 2026-07-04 02:26 UTCOSV refresh
  7. 2026-07-02 16:54 UTCEPSS rescore
  8. 2026-07-01 15:03 UTCEPSS rescore
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  30. 2026-06-18 17:50 UTCEPSS rescore
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  36. 2026-06-15 17:45 UTCEPSS rescore
  37. 2026-06-15 14:13 UTCOSV refresh
  38. 2026-06-14 23:15 UTCEPSS rescore
  39. 2026-06-14 23:14 UTCEPSS rescore
  40. 2026-06-13 22:58 UTCEPSS rescore
  41. 2026-06-12 23:09 UTCEPSS rescore
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  43. 2026-06-11 13:57 UTCEPSS rescore
  44. 2026-06-10 22:16 UTCEPSS rescore
  45. 2026-06-10 13:19 UTCEPSS rescore
  46. 2026-06-08 14:14 UTCEPSS rescore
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  48. 2026-06-07 15:22 UTCEPSS rescore
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  50. 2026-06-06 13:45 UTCEPSS rescore
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  66. 2026-05-28 13:42 UTCEPSS rescore
  67. 2026-05-28 03:52 UTCEG score recompute
  68. 2026-05-28 03:52 UTCVendor advisory
  69. 2026-05-28 03:52 UTCGHSA enrichment
  70. 2026-05-27 13:38 UTCEPSS rescore
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  72. 2026-05-26 13:42 UTCEPSS rescore
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  74. 2026-05-26 07:17 UTCEPSS rescore
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Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2018-1139?
CVE-2018-1139 is a high vulnerability published on August 22, 2018. A flaw was found in the way samba before 4.7.9 and 4.8.4 allowed the use of weak NTLMv1 authentication even when NTLMv1 was explicitly disabled. A man-in-the-middle attacker could use this flaw to read the credential and other details passed between the samba server and client.
When was CVE-2018-1139 disclosed?
CVE-2018-1139 was first published in the National Vulnerability Database on August 22, 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-2018-1139 actively exploited?
CVE-2018-1139 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 86.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2018-1139?
CVE-2018-1139 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2018-1139?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-1139, 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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