CVE-2026-12806

HIGHPre-NVD 8.88.8—
EchelonGraph scoreHIGH confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-06-21. 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 has been found in Edimax BR-6478AC V2 1.23. The impacted element is the function formWlSiteSurvey of the file /goform/formWlSiteSurvey of the component POST Request Handler. The manipulation of the argument selSSID leads to buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS v3
8.8
EG Score
8.8(high)
EPSS
36.4%
KEV
Not listed

Published

June 21, 2026

Last Modified

June 23, 2026

Advisory Details (1)

Auto-updated Jun 21, 2026
No patch confirmed yet.
generic

Notion

https://lavender-bicycle-a5a.notion.site/EDIMAX-BR6478ACV2-formWlSiteSurvey-34b53a41781f80669c10df409a0851d4?source=copy_link

Vendor Advisories for CVE-2026-12806(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 36× in last 7d / 82× 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.

  1. 2026-07-07 06:58 UTCEG score recompute
  2. 2026-07-07 06:58 UTCGHSA enrichment
  3. 2026-07-06 18:56 UTCEG score recompute
  4. 2026-07-06 18:56 UTCGHSA enrichment
  5. 2026-07-06 16:27 UTCEPSS rescore
  6. 2026-07-06 06:41 UTCEG score recompute
  7. 2026-07-06 06:40 UTCGHSA enrichment
  8. 2026-07-06 02:23 UTCEPSS rescore
  9. 2026-07-05 18:57 UTCEG score recompute
  10. 2026-07-05 18:57 UTCGHSA enrichment
  11. 2026-07-05 07:13 UTCEG score recompute
  12. 2026-07-05 07:13 UTCGHSA enrichment
  13. 2026-07-05 02:30 UTCEPSS rescore
  14. 2026-07-05 02:30 UTCEPSS rescore
  15. 2026-07-04 19:23 UTCEG score recompute
  16. 2026-07-04 19:22 UTCGHSA enrichment
  17. 2026-07-04 07:39 UTCEG score recompute
  18. 2026-07-04 07:38 UTCGHSA enrichment
  19. 2026-07-04 06:31 UTCEPSS rescore
  20. 2026-07-03 19:06 UTCEG score recompute
  21. 2026-07-03 19:06 UTCGHSA enrichment
  22. 2026-07-03 07:23 UTCEG score recompute
  23. 2026-07-03 07:23 UTCGHSA enrichment
  24. 2026-07-02 19:40 UTCEG score recompute
  25. 2026-07-02 19:40 UTCGHSA enrichment
Show 57 more
  1. 2026-07-02 07:56 UTCEG score recompute
  2. 2026-07-02 07:56 UTCGHSA enrichment
  3. 2026-07-01 20:13 UTCEG score recompute
  4. 2026-07-01 20:13 UTCGHSA enrichment
  5. 2026-07-01 15:06 UTCEPSS rescore
  6. 2026-07-01 15:06 UTCEPSS rescore
  7. 2026-07-01 08:28 UTCEG score recompute
  8. 2026-07-01 08:28 UTCGHSA enrichment
  9. 2026-06-30 23:22 UTCEPSS rescore
  10. 2026-06-30 20:41 UTCEG score recompute
  11. 2026-06-30 20:41 UTCGHSA enrichment
  12. 2026-06-30 08:54 UTCEG score recompute
  13. 2026-06-30 08:54 UTCGHSA enrichment
  14. 2026-06-29 21:11 UTCEG score recompute
  15. 2026-06-29 21:11 UTCGHSA enrichment
  16. 2026-06-29 14:06 UTCEPSS rescore
  17. 2026-06-29 09:28 UTCEG score recompute
  18. 2026-06-29 09:28 UTCGHSA enrichment
  19. 2026-06-28 21:45 UTCEG score recompute
  20. 2026-06-28 21:45 UTCGHSA enrichment
  21. 2026-06-28 14:07 UTCEPSS rescore
  22. 2026-06-28 10:01 UTCEG score recompute
  23. 2026-06-28 10:01 UTCGHSA enrichment
  24. 2026-06-28 04:56 UTCEPSS rescore
  25. 2026-06-28 04:56 UTCEPSS rescore
  26. 2026-06-27 22:18 UTCEG score recompute
  27. 2026-06-27 22:18 UTCGHSA enrichment
  28. 2026-06-27 10:35 UTCEG score recompute
  29. 2026-06-27 10:35 UTCGHSA enrichment
  30. 2026-06-27 03:08 UTCEPSS rescore
  31. 2026-06-26 22:52 UTCEG score recompute
  32. 2026-06-26 22:52 UTCGHSA enrichment
  33. 2026-06-26 11:09 UTCEG score recompute
  34. 2026-06-26 11:09 UTCGHSA enrichment
  35. 2026-06-25 18:49 UTCEG score recompute
  36. 2026-06-25 18:49 UTCGHSA enrichment
  37. 2026-06-25 13:49 UTCEPSS rescore
  38. 2026-06-25 07:05 UTCEG score recompute
  39. 2026-06-25 07:05 UTCGHSA enrichment
  40. 2026-06-24 19:22 UTCEG score recompute
  41. 2026-06-24 19:22 UTCGHSA enrichment
  42. 2026-06-24 14:05 UTCEPSS rescore
  43. 2026-06-24 07:39 UTCEG score recompute
  44. 2026-06-24 07:39 UTCGHSA enrichment
  45. 2026-06-23 21:32 UTCEPSS rescore
  46. 2026-06-23 19:49 UTCEG score recompute
  47. 2026-06-23 19:49 UTCGHSA enrichment
  48. 2026-06-23 15:31 UTCNVD updateCVSS v4 → 7.4
  49. 2026-06-23 14:35 UTCMITRE cvelistV5CVSS v4 → 8.7
  50. 2026-06-23 08:06 UTCEG score recompute
  51. 2026-06-23 08:06 UTCGHSA enrichment
  52. 2026-06-22 20:17 UTCEG score recompute
  53. 2026-06-22 20:17 UTCGHSA enrichment
  54. 2026-06-22 08:31 UTCEG score recompute
  55. 2026-06-22 08:31 UTCGHSA enrichment
  56. 2026-06-21 20:46 UTCEG score recompute
  57. 2026-06-21 20:44 UTCNVD updatefirst tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-12806?
CVE-2026-12806 is a high vulnerability published on June 21, 2026. A vulnerability has been found in Edimax BR-6478AC V2 1.23. The impacted element is the function formWlSiteSurvey of the file /goform/formWlSiteSurvey of the component POST Request Handler. The manipulation of the argument selSSID leads to buffer overflow. It is possible to initiate the attack…
When was CVE-2026-12806 disclosed?
CVE-2026-12806 was first published in the National Vulnerability Database on June 21, 2026, with the most recent update on June 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-12806 actively exploited?
CVE-2026-12806 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 36.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-12806?
CVE-2026-12806 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-12806?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-12806, 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

Explore the affected products and dependency analysis for CVE-2026-12806

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