CVE-2018-20743

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2022-05-14. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 4%CVSS: 7.5Exploit: None knownExposed: 0

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

murmur in Mumble through 1.2.19 before 2018-08-31 mishandles multiple concurrent requests that are persisted in the database, which allows remote attackers to cause a denial of service (daemon hang or crash) via a message flood.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: Track

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
Severity75% × 45%
Exploitation4% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
4%
EPSS %ILE
89%
KEV
Not listed

Published

January 25, 2019

Last Modified

November 21, 2024

References (18)

Affected Packages

(6 across 6 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
mumble—1.3.0~git20190114.9fcc588+dfsg-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
mumble—1.3.0~git20190114.9fcc588+dfsg-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
mumble—1.3.0~git20190114.9fcc588+dfsg-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
mumble—1.3.0~git20190114.9fcc588+dfsg-1—
Debian:8(1)
PackageVulnerable rangeFixed inDependents
mumble1.2.8-21.2.8-2+deb8u1—
Debian:9(1)
PackageVulnerable rangeFixed inDependents
mumble1.2.18-11.2.18-1+deb9u1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 29× 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 125 total refreshes for this CVE.

  1. 2026-08-20 22:51 UTCEPSS rescore
  2. 2026-08-19 17:00 UTCEPSS rescore
  3. 2026-08-18 13:44 UTCEPSS rescore
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  14. 2026-08-06 06:54 UTCOSV refresh
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  1. 2026-07-24 14:14 UTCEPSS rescore
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  3. 2026-07-23 01:35 UTCEG score recompute
  4. 2026-07-22 22:15 UTCEG score recompute
  5. 2026-07-22 14:05 UTCEPSS rescore
  6. 2026-07-21 15:22 UTCEPSS rescore
  7. 2026-07-20 23:02 UTCOSV refresh
  8. 2026-07-20 17:04 UTCEPSS rescore
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  10. 2026-07-19 14:28 UTCEPSS rescore
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  19. 2026-07-13 22:27 UTCEPSS rescore
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  21. 2026-07-13 06:10 UTCEPSS rescore
  22. 2026-07-12 05:43 UTCEPSS rescore
  23. 2026-07-11 08:24 UTCEPSS rescore
  24. 2026-07-09 19:06 UTCEPSS rescore
  25. 2026-07-08 15:11 UTCEPSS rescore
  26. 2026-07-07 13:42 UTCEPSS rescore
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  28. 2026-07-06 16:24 UTCEPSS rescore
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  34. 2026-07-03 18:26 UTCOSV refresh
  35. 2026-07-02 16:54 UTCEPSS rescore
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  40. 2026-06-28 14:04 UTCEPSS rescore
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  45. 2026-06-25 13:47 UTCEPSS rescore
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  49. 2026-06-23 21:30 UTCEPSS rescore
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  52. 2026-06-22 14:23 UTCEPSS rescore
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  55. 2026-06-19 19:23 UTCEPSS rescore
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  63. 2026-06-15 17:45 UTCEPSS rescore
  64. 2026-06-15 06:43 UTCOSV refresh
  65. 2026-06-14 23:15 UTCEPSS rescore
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  67. 2026-06-13 22:58 UTCEPSS rescore
  68. 2026-06-12 23:09 UTCEPSS rescore
  69. 2026-06-12 23:09 UTCEPSS rescore
  70. 2026-06-11 13:57 UTCEPSS rescore
  71. 2026-06-10 22:16 UTCEPSS rescore
  72. 2026-06-10 13:19 UTCEPSS rescore
  73. 2026-06-08 14:14 UTCEPSS rescore
  74. 2026-06-08 14:14 UTCEPSS rescore
  75. 2026-06-07 15:22 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2018-20743?
CVE-2018-20743 is a high vulnerability published on January 25, 2019. murmur in Mumble through 1.2.19 before 2018-08-31 mishandles multiple concurrent requests that are persisted in the database, which allows remote attackers to cause a denial of service (daemon hang or crash) via a message flood.
When was CVE-2018-20743 disclosed?
CVE-2018-20743 was first published in the National Vulnerability Database on January 25, 2019, 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-2018-20743 actively exploited?
CVE-2018-20743 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 4% probability of exploitation in the next 30 days, which ranks it in the top 11.4% of all scored CVEs.
What is the CVSS score of CVE-2018-20743?
CVE-2018-20743 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2018-20743?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-20743, 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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