CVE-2026-66407

HIGHPre-NVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-08-10. a secondary CVSS source baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.1Exploit: None knownExposed: 0

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

DEEBOT PRO M1 and DEEBOT PRO K1VAC improperly implement authentication in WebSocket communication. The WebSocket private key may be retrieved through analyzing the traffic data via a man-in-the-middle attack, and communication contents may be altered.

CVSS v3
8.1
EG Score
8.1(medium)
EG Risk
37(Track)
EG Risk 37/100SSVC: Track

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
Severity81% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
8%
KEV
Not listed

Published

August 10, 2026

Last Modified

August 28, 2026

Advisory Details (2)

Auto-updated Aug 10, 2026
No patch confirmed yet.
generic

JVNVU#92804348: Multiple vulnerabilities in DEEBOT PRO M1, DEEBOT PRO K1VAC and ECOVACS PRO App

https://jvn.jp/en/vu/JVNVU92804348/
generic

DEEBOT PRO M1/K1VAC ファームウェア更新のお知らせ　　　（2026年3月31日更新） ｜ ロボット紹介−ハロハスロボティクス

https://robot.hellohas.co.jp/news/update_20260331/

Vendor Advisories for CVE-2026-66407(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 21× in last 7d / 101× 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 147 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-66407?
CVE-2026-66407 is a high vulnerability published on August 10, 2026. DEEBOT PRO M1 and DEEBOT PRO K1VAC improperly implement authentication in WebSocket communication. The WebSocket private key may be retrieved through analyzing the traffic data via a man-in-the-middle attack, and communication contents may be altered.
When was CVE-2026-66407 disclosed?
CVE-2026-66407 was first published in the National Vulnerability Database on August 10, 2026, with the most recent update on August 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-66407 actively exploited?
CVE-2026-66407 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 91.7% of all scored CVEs.
What is the CVSS score of CVE-2026-66407?
CVE-2026-66407 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-66407?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-66407, 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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