CVE-2018-12543

HIGHNVD 7.57.7▲
EchelonGraph scoreHIGH confidence

Score elevated to 7.7 because EPSS predicts 36% probability of exploitation within the next 30 days (98th percentile of EPSS-scored CVEs). NVD baseline CVSS 7.5 retained for reference. Confidence: see factors.

Triggered by: EPSS exploit prediction (continuous uplift above 30%)
Sources: epss, ghsa, nvd
Elevated
7.7EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 36%CVSS: 7.5Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

In Eclipse Mosquitto versions 1.5 to 1.5.2 inclusive, if a message is published to Mosquitto that has a topic starting with $, but that is not $SYS, e.g. $test/test, then an assert is triggered that should otherwise not be reachable and Mosquitto will exit.

CVSS v3
7.5
EG Score
7.7HIGHhigh confidence
EG Risk
55
EG Risk 55/100CISA 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
Severity77% × 45%
Exploitation40% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track* or Attend at high (mission-essential systems).
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
36%
EPSS %ILE
98th
KEV
Not listed

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

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 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

November 15, 2018

Last Modified

November 21, 2024

References (2)

Affected Packages

(16 across 16 ecosystems)
Alpine:v3.10(1)
PackageVulnerable rangeFix by version rangeDependents
mosquitto—
  • 1.5.0 up to 1.5.3-r0: fixed in 1.5.3-r0
—
Alpine:v3.11(1)
PackageVulnerable rangeFix by version rangeDependents
mosquitto—
  • 1.5.0 up to 1.5.3-r0: fixed in 1.5.3-r0
—
Alpine:v3.12(1)
PackageVulnerable rangeFix by version rangeDependents
mosquitto—
  • 1.5.0 up to 1.5.3-r0: fixed in 1.5.3-r0
—
Alpine:v3.13(1)
PackageVulnerable rangeFix by version rangeDependents
mosquitto—
  • 1.5.0 up to 1.5.3-r0: fixed in 1.5.3-r0
—
Alpine:v3.14(1)
PackageVulnerable rangeFix by version rangeDependents
mosquitto—
  • 1.5.0 up to 1.5.3-r0: fixed in 1.5.3-r0
—
Alpine:v3.15(1)
PackageVulnerable rangeFix by version rangeDependents
mosquitto—
  • 1.5.0 up to 1.5.3-r0: fixed in 1.5.3-r0
—
Alpine:v3.16(1)
PackageVulnerable rangeFix by version rangeDependents
mosquitto—
  • 1.5.0 up to 1.5.3-r0: fixed in 1.5.3-r0
—
Alpine:v3.17(1)
PackageVulnerable rangeFix by version rangeDependents
mosquitto—
  • 1.5.0 up to 1.5.3-r0: fixed in 1.5.3-r0
—
Alpine:v3.18(1)
PackageVulnerable rangeFix by version rangeDependents
mosquitto—
  • 1.5.0 up to 1.5.3-r0: fixed in 1.5.3-r0
—
Alpine:v3.19(1)
PackageVulnerable rangeFix by version rangeDependents
mosquitto—
  • 1.5.0 up to 1.5.3-r0: fixed in 1.5.3-r0
—
Alpine:v3.20(1)
PackageVulnerable rangeFix by version rangeDependents
mosquitto—
  • 1.5.0 up to 1.5.3-r0: fixed in 1.5.3-r0
—
Alpine:v3.21(1)
PackageVulnerable rangeFix by version rangeDependents
mosquitto—
  • 1.5.0 up to 1.5.3-r0: fixed in 1.5.3-r0
—
Alpine:v3.22(1)
PackageVulnerable rangeFix by version rangeDependents
mosquitto—
  • 1.5.0 up to 1.5.3-r0: fixed in 1.5.3-r0
—
Alpine:v3.23(1)
PackageVulnerable rangeFix by version rangeDependents
mosquitto—
  • 1.5.0 up to 1.5.3-r0: fixed in 1.5.3-r0
—
Alpine:v3.24(1)
PackageVulnerable rangeFix by version rangeDependents
mosquitto—
  • 1.5.0 up to 1.5.3-r0: fixed in 1.5.3-r0
—
Alpine:v3.9(1)
PackageVulnerable rangeFix by version rangeDependents
mosquitto—
  • 1.5.0 up to 1.5.3-r0: fixed in 1.5.3-r0
—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 4× 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 146 total refreshes for this CVE.

  1. 2026-10-09 20:02 UTCEPSS rescore
  2. 2026-10-07 23:41 UTCEPSS rescore
  3. 2026-10-06 15:12 UTCEPSS rescore
  4. 2026-10-05 17:39 UTCEPSS rescore
  5. 2026-10-03 14:21 UTCEPSS rescore
  6. 2026-09-30 14:59 UTCEPSS rescore
  7. 2026-09-30 09:53 UTCEG score recompute
  8. 2026-09-28 16:42 UTCOSV refresh
  9. 2026-09-27 13:40 UTCEPSS rescore
  10. 2026-09-27 13:40 UTCEPSS rescore
  11. 2026-09-26 15:53 UTCEPSS rescore
  12. 2026-09-26 00:19 UTCEPSS rescore
  13. 2026-09-24 13:59 UTCEPSS rescore
  14. 2026-09-23 13:42 UTCEPSS rescore
  15. 2026-09-21 20:27 UTCEPSS rescore
  16. 2026-09-20 20:10 UTCEPSS rescore
  17. 2026-09-19 15:36 UTCEPSS rescore
  18. 2026-09-18 19:22 UTCEPSS rescore
  19. 2026-09-17 19:22 UTCEPSS rescore
  20. 2026-09-16 14:03 UTCEPSS rescore
  21. 2026-09-16 05:06 UTCEPSS rescore
  22. 2026-09-15 03:05 UTCEPSS rescore
  23. 2026-09-13 16:42 UTCEPSS rescore
  24. 2026-09-12 14:56 UTCEPSS rescore
  25. 2026-09-11 14:47 UTCEPSS rescore
Show 75 more
  1. 2026-09-10 09:27 UTCEPSS rescore
  2. 2026-09-08 21:34 UTCOSV refresh
  3. 2026-09-07 15:57 UTCEPSS rescore
  4. 2026-09-06 13:43 UTCEPSS rescore
  5. 2026-09-05 15:24 UTCEPSS rescore
  6. 2026-09-04 13:56 UTCEPSS rescore
  7. 2026-09-04 05:02 UTCEPSS rescore
  8. 2026-09-02 14:07 UTCEPSS rescore
  9. 2026-09-02 14:07 UTCEPSS rescore
  10. 2026-09-01 13:49 UTCEPSS rescore
  11. 2026-08-30 19:13 UTCEPSS rescore
  12. 2026-08-28 21:36 UTCEPSS rescore
  13. 2026-08-26 14:41 UTCEPSS rescore
  14. 2026-08-25 13:44 UTCEPSS rescore
  15. 2026-08-23 00:14 UTCEPSS rescore
  16. 2026-08-22 06:37 UTCOSV refresh
  17. 2026-08-21 23:44 UTCEPSS rescore
  18. 2026-08-20 22:51 UTCEPSS rescore
  19. 2026-08-19 17:00 UTCEPSS rescore
  20. 2026-08-18 13:43 UTCEPSS rescore
  21. 2026-08-17 13:42 UTCEPSS rescore
  22. 2026-08-16 14:51 UTCEPSS rescore
  23. 2026-08-16 02:10 UTCEPSS rescore
  24. 2026-08-15 01:26 UTCEPSS rescore
  25. 2026-08-13 21:56 UTCEPSS rescore
  26. 2026-08-12 13:46 UTCEPSS rescore
  27. 2026-08-11 13:36 UTCEPSS rescore
  28. 2026-08-07 16:22 UTCEPSS rescore
  29. 2026-08-06 09:40 UTCOSV refresh
  30. 2026-08-04 15:05 UTCEPSS rescore
  31. 2026-08-01 04:12 UTCEPSS rescore
  32. 2026-07-30 16:24 UTCEPSS rescore
  33. 2026-07-30 01:27 UTCEPSS rescore
  34. 2026-07-28 15:32 UTCEPSS rescore
  35. 2026-07-26 14:51 UTCEPSS rescore
  36. 2026-07-26 14:51 UTCEPSS rescore
  37. 2026-07-24 14:14 UTCEPSS rescore
  38. 2026-07-23 14:15 UTCEPSS rescore
  39. 2026-07-23 14:15 UTCEPSS rescore
  40. 2026-07-23 01:33 UTCEG score recompute▲ 0.20
  41. 2026-07-22 22:13 UTCEG score recompute
  42. 2026-07-22 14:04 UTCEPSS rescore
  43. 2026-07-21 15:21 UTCEPSS rescore
  44. 2026-07-21 02:47 UTCOSV refresh
  45. 2026-07-20 17:04 UTCEPSS rescore
  46. 2026-07-20 17:04 UTCEPSS rescore
  47. 2026-07-19 14:28 UTCEPSS rescore
  48. 2026-07-16 16:59 UTCEPSS rescore
  49. 2026-07-16 16:59 UTCEPSS rescore
  50. 2026-07-15 16:55 UTCEPSS rescore
  51. 2026-07-15 01:56 UTCEPSS rescore
  52. 2026-07-13 22:26 UTCEPSS rescore
  53. 2026-07-13 06:10 UTCEPSS rescore
  54. 2026-07-12 05:43 UTCEPSS rescore
  55. 2026-07-11 08:24 UTCEPSS rescore
  56. 2026-07-09 19:06 UTCEPSS rescore
  57. 2026-07-08 15:11 UTCEPSS rescore
  58. 2026-07-07 13:42 UTCEPSS rescore
  59. 2026-07-07 13:42 UTCEPSS rescore
  60. 2026-07-06 02:20 UTCEPSS rescore
  61. 2026-07-04 06:28 UTCEPSS rescore
  62. 2026-07-03 21:56 UTCOSV refresh
  63. 2026-07-02 16:54 UTCEPSS rescore
  64. 2026-07-01 15:03 UTCEPSS rescore
  65. 2026-07-01 15:03 UTCEPSS rescore
  66. 2026-06-30 23:19 UTCEPSS rescore
  67. 2026-06-30 23:19 UTCEPSS rescore
  68. 2026-06-29 14:03 UTCEPSS rescore
  69. 2026-06-28 04:53 UTCEPSS rescore
  70. 2026-06-28 04:53 UTCEPSS rescore
  71. 2026-06-25 13:47 UTCEPSS rescore
  72. 2026-06-25 13:47 UTCEPSS rescore
  73. 2026-06-24 14:02 UTCEPSS rescore
  74. 2026-06-24 14:02 UTCEPSS rescore
  75. 2026-06-23 21:30 UTCEPSS rescore

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2018-12543?
CVE-2018-12543 is a high vulnerability published on November 15, 2018. In Eclipse Mosquitto versions 1.5 to 1.5.2 inclusive, if a message is published to Mosquitto that has a topic starting with $, but that is not $SYS, e.g. $test/test, then an assert is triggered that should otherwise not be reachable and Mosquitto will exit.
When was CVE-2018-12543 disclosed?
CVE-2018-12543 was first published 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-2018-12543 actively exploited?
CVE-2018-12543 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 36% probability of exploitation in the next 30 days (98th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2018-12543?
CVE-2018-12543 has a CVSS v3 base score of 7.5 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 7.7 (HIGH).
How do I remediate CVE-2018-12543?
A fix for CVE-2018-12543 is available: update to the fixed version the vendor names in its advisory.

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