CVE-2026-9389

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-05-26. the CNA's CVSS baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vuldb, epss, ghsa
Elevated
8.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.8Exploit: NoneExposed: 0

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

A security vulnerability has been detected in Tenda F456 1.0.0.5. This affects the function frmL7ImForm of the file /goform/L7Im. The manipulation of the argument page leads to buffer overflow. The attack can be initiated remotely. The exploit has been disclosed publicly and may be used.

CVSS v3
8.8
EG Score
8.8(medium)
EPSS
35.4%
KEV
Not listed

Published

May 24, 2026

Last Modified

May 29, 2026

Advisory Details (2)

Auto-updated Jun 2, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

腾达(Tenda) 腾达中文网站 - 致力于建设值得信赖的好网络

https://www.tenda.com.cn/
generic🟡 PoC Available

vuldb_new/F456/vul_2/README.md at main · Litengzheng/vuldb_new · GitHub

https://github.com/Litengzheng/vuldb_new/blob/main/F456/vul_2/README.md

Vendor Advisories for CVE-2026-9389(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 7× in last 7d / 54× 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 136 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-9389?
CVE-2026-9389 is a high vulnerability published on May 24, 2026. A security vulnerability has been detected in Tenda F456 1.0.0.5. This affects the function frmL7ImForm of the file /goform/L7Im. The manipulation of the argument page leads to buffer overflow. The attack can be initiated remotely. The exploit has been disclosed publicly and may be used.
When was CVE-2026-9389 disclosed?
CVE-2026-9389 was first published in the National Vulnerability Database on May 24, 2026, with the most recent update on May 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-9389 actively exploited?
CVE-2026-9389 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 35.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-9389?
CVE-2026-9389 has a CVSS v4.0 base score of 8.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-9389?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-9389, 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

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