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DEEBOT PRO CVE-2026-66411

| EUVDEUVD-2026-55118 MEDIUM
Incorrect Implementation of Authentication Algorithm (CWE-303)
2026-08-10 jpcert GHSA-p783-9mgr-fcxj
6.9
CVSS 4.0 · Vendor: jpcert
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Severity by source

Vendor (jpcert) PRIMARY
6.9 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
5.3 MEDIUM

Network-accessible WebSocket bypassed without credentials (AV:N, PR:N); impact limited to unauthorized robot operation (I:L); no confidentiality or availability impact confirmed by description.

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

Primary rating from Vendor (jpcert).

CVSS VectorVendor: jpcert

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

2
CVSS changed
Aug 10, 2026 - 09:22 NVD
5.3 (MEDIUM) 6.9 (MEDIUM)
Analysis Generated
Aug 10, 2026 - 09:14 vuln.today

DescriptionCVE.org

DEEBOT PRO M1 and DEEBOT PRO K1VAC incorrectly implement authentication algorithm in Websocket communications. An unauthenticated attacker may connect and operate the affected robot.

AnalysisAI

Remote unauthenticated control of Ecovacs Robotics DEEBOT PRO M1 and K1VAC robot vacuums is possible due to an incorrectly implemented authentication algorithm in their WebSocket communications interface. Any network-reachable attacker can connect to and issue operational commands to affected robots without valid credentials (AV:N, PR:N per CVSS vector). …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Impact
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Vulnerability AssessmentAI

Exploitation The robot must be reachable over the network - attack vector is network (AV:N) per the CVSS vector, requiring no physical or local access. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 base score of 5.3 (Medium) reflects a network-accessible (AV:N), low-complexity (AC:L), unauthenticated (PR:N, UI:N) attack path with limited integrity impact (I:L) and no confidentiality or availability impact. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Apply the firmware update referenced in the vendor advisory published March 31, 2026 at https://robot.hellohas.co.jp/news/update_20260331/. … Detailed patch versions, workarounds, and compensating controls in full report.

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CVE-2026-66411 vulnerability details – vuln.today

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