CVE-2026-66404

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreHIGH confidence

Score 6.5 from GitHub Security Advisory published 2026-08-10. a secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: 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 do not validate server certificates in MQTT communications. Operation logs and activity logs stored on the affected products may be retrieved.

CVSS v3
6.5
EG Score
6.5(high)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity65% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
11%
KEV
Not listed

Published

August 10, 2026

Last Modified

August 10, 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-2026-66404(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 19× in last 7d / 34× 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. 2026-08-20 22:56 UTCEPSS rescore
  2. 2026-08-20 18:31 UTCGHSA enrichment
  3. 2026-08-19 18:45 UTCEG score recompute
  4. 2026-08-19 18:45 UTCGHSA enrichment
  5. 2026-08-19 17:04 UTCEPSS rescore
  6. 2026-08-18 17:25 UTCEG score recompute
  7. 2026-08-18 17:25 UTCGHSA enrichment
  8. 2026-08-18 13:48 UTCEPSS rescore
  9. 2026-08-17 17:06 UTCEG score recompute
  10. 2026-08-17 17:06 UTCGHSA enrichment
  11. 2026-08-17 13:47 UTCEPSS rescore
  12. 2026-08-16 17:19 UTCEG score recompute
  13. 2026-08-16 17:19 UTCGHSA enrichment
  14. 2026-08-16 14:56 UTCEPSS rescore
  15. 2026-08-15 17:32 UTCEG score recompute
  16. 2026-08-15 17:32 UTCGHSA enrichment
  17. 2026-08-15 01:30 UTCEPSS rescore
  18. 2026-08-14 17:45 UTCEG score recompute
  19. 2026-08-14 17:45 UTCGHSA enrichment
  20. 2026-08-13 22:00 UTCEPSS rescore
  21. 2026-08-13 17:52 UTCGHSA enrichment
  22. 2026-08-12 18:00 UTCEG score recompute
  23. 2026-08-12 18:00 UTCGHSA enrichment
  24. 2026-08-12 13:51 UTCEPSS rescore
  25. 2026-08-11 18:14 UTCEG score recompute
Show 9 more
  1. 2026-08-11 18:14 UTCGHSA enrichment
  2. 2026-08-11 00:00 UTCEPSS rescore
  3. 2026-08-10 18:25 UTCEG score recompute
  4. 2026-08-10 18:25 UTCGHSA enrichment
  5. 2026-08-10 17:55 UTCEG score recompute
  6. 2026-08-10 17:55 UTCGHSA enrichment
  7. 2026-08-10 09:20 UTCEG score recompute
  8. 2026-08-10 08:16 UTCEG score recompute
  9. 2026-08-10 08:16 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-66404?
CVE-2026-66404 is a medium vulnerability published on August 10, 2026. DEEBOT PRO M1 and DEEBOT PRO K1VAC do not validate server certificates in MQTT communications. Operation logs and activity logs stored on the affected products may be retrieved.
When was CVE-2026-66404 disclosed?
CVE-2026-66404 was first published in the National Vulnerability Database on August 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-66404 actively exploited?
CVE-2026-66404 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 89.4% of all scored CVEs.
What is the CVSS score of CVE-2026-66404?
CVE-2026-66404 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-66404?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-66404, 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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