CVE-2026-66411Network attack vector

Unauthorized robot control via incomplete token validation

Published Aug 10, 2026 · Updated Aug 10, 2026

Authentication bypass in ECOVACS Robotics DEEBOT PRO M1 and DEEBOT PRO K1 VAC allows remote attackers to operate the robot over WebSocket. The WebSocket endpoint accepts plaintext or nonconforming requests because its incomplete token-verification scheme does not enforce authentication. Network reachability to the robot is sufficient; no credentials or user interaction are required, and the demonstrated consequence is unauthorized robot operation.

CVSS severity6.9
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in ECOVACS Robotics DEEBOT PRO M1 and DEEBOT PRO K1 VAC allows remote attackers to operate the robot over WebSocket. The WebSocket endpoint accepts plaintext or nonconforming requests because its incomplete token-verification scheme does not enforce authentication. Network reachability to the robot is sufficient; no credentials or user interaction are required, and the demonstrated consequence is unauthorized robot operation.

The record

CVE
CVE-2026-66411
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
ECOVACS Robotics Co., Ltd.
Product
DEEBOT PRO K1 VAC
Classifications
CWE-303, CAPEC-90, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <V1.7.821

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ECOVACS Robotics Co., Ltd. · DEEBOT PRO K1 VACversion=0 <V1.7.821
ECOVACS Robotics Co., Ltd. · DEEBOT PRO M1version=0 <M1-1.7.27

Published CVSS scores

5.3JPCERT/CCCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
6.9JPCERT/CCCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-303Incorrect Implementation of Authentication Algorithm
CAPEC-90Reflection Attack in Authentication Protocol
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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