CVE-2026-11553

HIGHPre-NVD 8.88.8—
EchelonGraph scoreHIGH confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-06-08. a secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
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 vulnerability was found in Tenda HG7HG9 and HG10 300001138_en_xpon. This affects the function formPPPEdit of the file /boaform/formPPPEdit. The manipulation of the argument encodename results in stack-based buffer overflow. The attack can be launched remotely. The exploit has been made public and could be used.

CVSS v3
8.8
EG Score
8.8(high)
EPSS
37.8%
KEV
Not listed

Published

June 8, 2026

Last Modified

June 9, 2026

Advisory Details (3)

Auto-updated Jun 8, 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

Tenda-Stack-Overflow/report.md at main · xiezhihua-1127/Tenda-Stack-Overflow · GitHub

https://github.com/xiezhihua-1127/Tenda-Stack-Overflow/blob/main/report.md
generic

GitHub - xiezhihua-1127/Tenda-Stack-Overflow: A stack-based buffer overflow vulnerability exists in the formPPPEdit interface (via the encodename parameter) exposed through the web management interface (/boaform/formPPPEdit) of the Tenda HG10 router. · GitHub

https://github.com/xiezhihua-1127/Tenda-Stack-Overflow.git

Vendor Advisories for CVE-2026-11553(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 28× in last 7d / 144× 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 144 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-11553?
CVE-2026-11553 is a high vulnerability published on June 8, 2026. A vulnerability was found in Tenda HG7HG9 and HG10 300001138enxpon. This affects the function formPPPEdit of the file /boaform/formPPPEdit. The manipulation of the argument encodename results in stack-based buffer overflow. The attack can be launched remotely. The exploit has been made public and…
When was CVE-2026-11553 disclosed?
CVE-2026-11553 was first published in the National Vulnerability Database on June 8, 2026, with the most recent update on June 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-11553 actively exploited?
CVE-2026-11553 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 37.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-11553?
CVE-2026-11553 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-11553?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-11553, 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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