CVE-2026-51763

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-09-01. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: None knownExposed: 0

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

Incorrect access control in the freeStaClient function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to forcibly disconnect wireless clients via sending a crafted MQTT message to the cs_broker component.

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
59(Track)
EG Risk 59/100SSVC: 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
Severity98% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
48%
KEV
Not listed

Published

September 1, 2026

Last Modified

September 3, 2026

Advisory Details (3)

Auto-updated Sep 24, 2026
No patch confirmed yet.
generic

TOTOLINK | Wi-Fi 7, Mesh, 5G & Enterprise Networking

https://www.totolink.net/
generic

CVE-Vendor-Coordination/TOTOLINK/README.md at main · ShengWu00/CVE-Vendor-Coordination · GitHub

https://github.com/ShengWu00/CVE-Vendor-Coordination/blob/main/TOTOLINK/README.md
generic

CVE-Vendor-Coordination/TOTOLINK/README.md at main · ShengWu00/CVE-Vendor-Coordination · GitHub

https://github.com/DarkBoulder/CVE-Vendor-Coordination/blob/main/TOTOLINK/README.md

Vendor Advisories for CVE-2026-51763(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 51× in last 7d / 176× 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 176 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-51763?
CVE-2026-51763 is a critical vulnerability published on September 1, 2026. Incorrect access control in the freeStaClient function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to forcibly disconnect wireless clients via sending a crafted MQTT message to the csbroker component.
When was CVE-2026-51763 disclosed?
CVE-2026-51763 was first published in the National Vulnerability Database on September 1, 2026, with the most recent update on September 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-51763 actively exploited?
CVE-2026-51763 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 51.6% of all scored CVEs.
What is the CVSS score of CVE-2026-51763?
CVE-2026-51763 has a CVSS v3.1 base score of 9.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-51763?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-51763, 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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