CVE-2026-85109

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: HIGH) published 2026-09-03. a secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
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: Elevated riskExposed: 0

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

A vulnerability was determined in Tenda HG10 300001138. This issue affects the function formLogin of the file /boaform/formLogin of the component Boa Web Server. Executing a manipulation of the argument Username can lead to buffer overflow. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized.

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
75(Attend)
EG Risk 75/100SSVC: 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
Severity98% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
1%
EPSS %ILE
64%
KEV
Not listed

Published

September 3, 2026

Last Modified

September 3, 2026

Advisory Details (2)

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

腾达(Tenda) 官方网站 - 致力于建设值得信赖的好网络

https://www.tenda.com.cn/
generic

cuicuishark-sheep-fishIOT/Tenda/HG10/bof-formLogin_username.md at main · SunnyYANGyaya/cuicuishark-sheep-fishIOT · GitHub

https://github.com/SunnyYANGyaya/cuicuishark-sheep-fishIOT/blob/main/Tenda/HG10/bof-formLogin_username.md

Vendor Advisories for CVE-2026-85109(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 56× in last 7d / 177× 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 177 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-85109?
CVE-2026-85109 is a critical vulnerability published on September 3, 2026. A vulnerability was determined in Tenda HG10 300001138. This issue affects the function formLogin of the file /boaform/formLogin of the component Boa Web Server. Executing a manipulation of the argument Username can lead to buffer overflow. The attack may be launched remotely. The exploit has been…
When was CVE-2026-85109 disclosed?
CVE-2026-85109 was first published in the National Vulnerability Database 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-2026-85109 actively exploited?
CVE-2026-85109 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 35.9% of all scored CVEs.
What is the CVSS score of CVE-2026-85109?
CVE-2026-85109 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-85109?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-85109, 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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