CVE-2026-66408

Root credential disclosure via weak password

Published Aug 10, 2026 · Updated Aug 10, 2026

Weak root credentials in ECOVACS DEEBOT PRO M1 before M1-1.7.27 and K1VAC before V1.7.821 allow attackers to obtain root passwords. The devices configure their root accounts with passwords weak enough to be analyzed after malicious physical manipulation; public advisories do not identify the storage locus or derivation method. Exploitation requires physical access to the robot and exposes the root credential, which permits entry into the robot system.

CVSS severity4.6
Medium
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Weak root credentials in ECOVACS DEEBOT PRO M1 before M1-1.7.27 and K1VAC before V1.7.821 allow attackers to obtain root passwords. The devices configure their root accounts with passwords weak enough to be analyzed after malicious physical manipulation; public advisories do not identify the storage locus or derivation method. Exploitation requires physical access to the robot and exposes the root credential, which permits entry into the robot system.

The record

CVE
CVE-2026-66408
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
ECOVACS Robotics Co., Ltd.
Product
DEEBOT PRO K1 VAC
Classifications
CWE-1391
Attack vector
physical
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 vectorphysical
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

4.6JPCERT/CCCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
5.1JPCERT/CCCVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/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.

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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)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1391Use of Weak Credentials

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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