CVE-2026-66405Network attack vector

Device control via default-enabled Telnet service

Published Aug 10, 2026 · Updated Aug 10, 2026

Active debug code in ECOVACS DEEBOT PRO M1 before M1-1.7.27 and K1VAC before V1.7.821 allows remote authenticated users to control devices. Production firmware starts the Telnet server by default instead of disabling the remote administrative service. Network-reachable users with valid Telnet credentials can obtain an interactive device session and control the affected robot.

CVSS severity8.7
High
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Active debug code in ECOVACS DEEBOT PRO M1 before M1-1.7.27 and K1VAC before V1.7.821 allows remote authenticated users to control devices. Production firmware starts the Telnet server by default instead of disabling the remote administrative service. Network-reachable users with valid Telnet credentials can obtain an interactive device session and control the affected robot.

The record

CVE
CVE-2026-66405
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
ECOVACS Robotics Co., Ltd.
Product
DEEBOT PRO K1 VAC
Classifications
CWE-489, T1021
Attack vector
network
Privileges
authenticated

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 privilegesauthenticated

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

8.7JPCERT/CCCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
8.8JPCERT/CCCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-489Active Debug Code
T1021Remote Services

Public exploit references

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Technologies

Your stack

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Your stack

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