CVE-2026-66404

MQTT Certificate Validation Failure Exposes Logs

Published Aug 10, 2026 CVSS 4.0 · 6 Medium EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Ecovacs Robotics
Ecovacs Robotics deebot Pro K1vac
Ecovacs Robotics deebot Pro M1
Vendors & Products Ecovacs Robotics
Ecovacs Robotics deebot Pro K1vac
Ecovacs Robotics deebot Pro M1
Type Values Removed Values Added
Title MQTT Certificate Validation Failure Exposes Logs
Type Values Removed Values Added
Description 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.
Weaknesses CWE-295
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N'}

cvssV4_0

{'score': 6, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
jpcert
Published
Updated
Aug 10, 2026, 5:47 PM
Reserved
Jul 27, 2026, 12:45 AM
Status
Deferred
Published
Aug 10, 2026, 9:17 AM
Modified
Aug 28, 2026, 4:09 PM