CVE-2026-36590

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-07-16. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this weekElevated
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.5Exploit: Elevated riskExposed: 0

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

An issue in EMQ NanoMQ v.0.24.9 allows a remote attacker to cause a denial of service via the nni_qos_db_set function in broker_tcp.c component

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
65(Attend)
EG Risk 65/100SSVC: Attend

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%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
1%
EPSS %ILE
45%
KEV
Not listed

Published

July 15, 2026

Last Modified

July 16, 2026

Advisory Details (2)

Auto-updated Jul 16, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

NanoMQ-Memory-Leak-Research/README.md at main · MoXie25/NanoMQ-Memory-Leak-Research · GitHub

https://github.com/MoXie25/NanoMQ-Memory-Leak-Research/blob/main/README.md
generic🟡 PoC Available

GitHub - MoXie25/NanoMQ-Memory-Leak-Research: Public advisory and technical analysis for CVE-2026-36590, a NanoMQ v0.24.9 denial-of-service vulnerability. · GitHub

https://github.com/MoXie25/NanoMQ-Memory-Leak-Research.git

Vendor Advisories for CVE-2026-36590(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 23× in last 7d / 112× 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 151 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-36590?
CVE-2026-36590 is a high vulnerability published on July 15, 2026. An issue in EMQ NanoMQ v.0.24.9 allows a remote attacker to cause a denial of service via the nniqosdbset function in brokertcp.c component
When was CVE-2026-36590 disclosed?
CVE-2026-36590 was first published in the National Vulnerability Database on July 15, 2026, with the most recent update on July 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-36590 actively exploited?
CVE-2026-36590 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 54.5% of all scored CVEs.
What is the CVSS score of CVE-2026-36590?
CVE-2026-36590 has a CVSS v3.1 base score of 7.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-36590?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-36590, 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.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-36590

Explore →

Is Your Infrastructure Affected by CVE-2026-36590?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs