CVE-2026-9389

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-05-26. a secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Elevated
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.8Exploit: Elevated riskExposed: 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)
EG Risk
71(Attend)
EG Risk 71/100SSVC: 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
Severity88% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
37%
KEV
Not listed

Published

May 24, 2026

Last Modified

July 23, 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 6× in last 7d / 66× 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 200 total refreshes for this CVE.

  1. 2026-09-04 05:07 UTCEPSS rescore
  2. 2026-09-02 14:12 UTCEPSS rescore
  3. 2026-09-01 13:54 UTCEPSS rescore
  4. 2026-09-01 04:40 UTCEPSS rescore
  5. 2026-08-30 19:18 UTCEPSS rescore
  6. 2026-08-30 01:22 UTCEPSS rescore
  7. 2026-08-28 21:42 UTCEPSS rescore
  8. 2026-08-27 14:25 UTCEPSS rescore
  9. 2026-08-26 14:47 UTCEPSS rescore
  10. 2026-08-25 13:49 UTCEPSS rescore
  11. 2026-08-24 14:18 UTCEPSS rescore
  12. 2026-08-23 16:36 UTCEG score recompute
  13. 2026-08-23 16:36 UTCGHSA enrichment
  14. 2026-08-23 00:19 UTCEPSS rescore
  15. 2026-08-21 23:49 UTCEPSS rescore
  16. 2026-08-21 21:38 UTCEG score recompute
  17. 2026-08-21 21:38 UTCGHSA enrichment
  18. 2026-08-20 22:56 UTCEPSS rescore
  19. 2026-08-20 18:31 UTCEG score recompute
  20. 2026-08-20 18:31 UTCGHSA enrichment
  21. 2026-08-19 17:04 UTCEPSS rescore
  22. 2026-08-18 13:49 UTCEPSS rescore
  23. 2026-08-17 13:47 UTCEPSS rescore
  24. 2026-08-17 09:41 UTCGHSA enrichment
  25. 2026-08-16 16:47 UTCEG score recompute
Show 75 more
  1. 2026-08-16 16:47 UTCGHSA enrichment
  2. 2026-08-16 14:56 UTCEPSS rescore
  3. 2026-08-16 14:56 UTCEPSS rescore
  4. 2026-08-16 03:16 UTCEG score recompute
  5. 2026-08-16 03:16 UTCGHSA enrichment
  6. 2026-08-16 02:15 UTCEPSS rescore
  7. 2026-08-15 02:02 UTCEG score recompute
  8. 2026-08-15 02:02 UTCGHSA enrichment
  9. 2026-08-15 01:31 UTCEPSS rescore
  10. 2026-08-14 13:55 UTCGHSA enrichment
  11. 2026-08-14 01:49 UTCEG score recompute
  12. 2026-08-14 01:49 UTCGHSA enrichment
  13. 2026-08-13 22:00 UTCEPSS rescore
  14. 2026-08-13 02:18 UTCGHSA enrichment
  15. 2026-08-12 14:12 UTCEG score recompute
  16. 2026-08-12 14:12 UTCGHSA enrichment
  17. 2026-08-12 13:51 UTCEPSS rescore
  18. 2026-08-12 01:55 UTCGHSA enrichment
  19. 2026-08-11 13:48 UTCEG score recompute
  20. 2026-08-11 13:48 UTCGHSA enrichment
  21. 2026-08-11 13:43 UTCEPSS rescore
  22. 2026-08-11 01:41 UTCEG score recompute
  23. 2026-08-11 01:41 UTCGHSA enrichment
  24. 2026-08-11 00:00 UTCEPSS rescore
  25. 2026-08-10 13:35 UTCGHSA enrichment
  26. 2026-08-10 01:17 UTCEG score recompute
  27. 2026-08-10 01:17 UTCGHSA enrichment
  28. 2026-08-09 13:47 UTCEPSS rescore
  29. 2026-08-09 13:11 UTCGHSA enrichment
  30. 2026-08-09 01:05 UTCEG score recompute
  31. 2026-08-09 01:05 UTCGHSA enrichment
  32. 2026-08-08 16:37 UTCEPSS rescore
  33. 2026-08-08 09:44 UTCGHSA enrichment
  34. 2026-08-07 21:38 UTCEG score recompute
  35. 2026-08-07 21:38 UTCGHSA enrichment
  36. 2026-08-07 16:30 UTCEPSS rescore
  37. 2026-08-07 09:31 UTCGHSA enrichment
  38. 2026-08-06 21:22 UTCEG score recompute
  39. 2026-08-06 21:22 UTCGHSA enrichment
  40. 2026-08-06 13:47 UTCEPSS rescore
  41. 2026-08-06 09:16 UTCGHSA enrichment
  42. 2026-08-05 21:09 UTCEG score recompute
  43. 2026-08-05 21:09 UTCGHSA enrichment
  44. 2026-08-05 19:17 UTCEPSS rescore
  45. 2026-08-05 19:17 UTCEPSS rescore
  46. 2026-08-04 15:10 UTCEPSS rescore
  47. 2026-08-04 10:39 UTCEPSS rescore
  48. 2026-08-04 04:52 UTCGHSA enrichment
  49. 2026-08-03 16:45 UTCEG score recompute
  50. 2026-08-03 16:45 UTCGHSA enrichment
  51. 2026-08-03 10:36 UTCEPSS rescore
  52. 2026-08-02 17:17 UTCGHSA enrichment
  53. 2026-08-02 05:10 UTCEG score recompute
  54. 2026-08-02 05:10 UTCGHSA enrichment
  55. 2026-08-02 02:27 UTCEPSS rescore
  56. 2026-08-01 17:04 UTCEG score recompute
  57. 2026-08-01 17:03 UTCGHSA enrichment
  58. 2026-08-01 04:16 UTCEPSS rescore
  59. 2026-07-30 16:28 UTCEPSS rescore
  60. 2026-07-30 01:30 UTCEPSS rescore
  61. 2026-07-29 17:20 UTCEG score recompute
  62. 2026-07-29 17:20 UTCGHSA enrichment
  63. 2026-07-28 15:37 UTCEPSS rescore
  64. 2026-07-27 14:14 UTCEPSS rescore
  65. 2026-07-26 14:54 UTCEPSS rescore
  66. 2026-07-26 08:02 UTCEG score recompute
  67. 2026-07-26 08:01 UTCGHSA enrichment
  68. 2026-07-25 14:18 UTCEPSS rescore
  69. 2026-07-24 14:18 UTCEPSS rescore
  70. 2026-07-23 14:18 UTCEPSS rescore
  71. 2026-07-23 11:51 UTCNVD updateCVSS v4 → 7.4
  72. 2026-07-23 03:23 UTCEG score recompute
  73. 2026-07-22 14:08 UTCEPSS rescore
  74. 2026-07-21 15:25 UTCEPSS rescore
  75. 2026-07-21 15:25 UTCEPSS rescore

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 July 23, 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 0% probability of exploitation in the next 30 days, which ranks it in the top 63.3% of all scored CVEs.
What is the CVSS score of CVE-2026-9389?
CVE-2026-9389 has a CVSS v3 base score of 8.8 (NVD).
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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