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 mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 8.1Exploit: None knownExposed services: Not assessed

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

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
8.1HIGHmedium confidence
EG Risk
37
EG Risk 37/100CISA SSVC

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%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.3%
EPSS %ILE
23rd
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

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 17× in last 7d / 84× 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 183 total refreshes for this CVE.

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

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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 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 0.3% probability of exploitation in the next 30 days (23rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-66407?
CVE-2026-66407 has a CVSS base score of 8.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-66407?
No fix for CVE-2026-66407 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-66407 are linked in the Vendor Advisories panel on this page.

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