Is CVE-2026-66409 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-66409 being exploited in the wild.

How severe is CVE-2026-66409?

Medium severity, with a CVSS score of 5.3, published 10 August 2026.

Which products and versions are affected?

Ecovacs DEEBOT PRO K1VAC prior to V1.7.821; Ecovacs DEEBOT PRO M1 prior to M1-1.7.27.

Is there a fix for CVE-2026-66409?

A patch was published on 2026-01-31: Initial patches released; K1VAC received additional update on 2026-03-23 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-66409 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-66409?

Check whether you run Ecovacs DEEBOT PRO K1VAC or Ecovacs DEEBOT PRO M1 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-66409: ECOVACS DEEBOT PRO weak Wi-Fi hotspot password

CVE-2026-66409 · Severity: medium · CVSS 5.3 · Published 2026-08-10

DEEBOT PRO robotic vacuum cleaners are configured with weak, predictable Wi-Fi hotspot passwords. An attacker can analyze and guess the password to connect directly to the robot's access point, bypassing network security controls and gaining unauthorized access to the device's local network interface and sensitive data stored on it.

Technologies: Ecovacs DEEBOT PRO K1VAC, Ecovacs DEEBOT PRO M1. Vendors: Ecovacs.

Quick answers

Is CVE-2026-66409 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-66409 being exploited in the wild.
How severe is CVE-2026-66409?: Medium severity, with a CVSS score of 5.3, published 10 August 2026.
Which products and versions are affected?: Ecovacs DEEBOT PRO K1VAC prior to V1.7.821; Ecovacs DEEBOT PRO M1 prior to M1-1.7.27.
Is there a fix for CVE-2026-66409?: A patch was published on 2026-01-31: Initial patches released; K1VAC received additional update on 2026-03-23 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-66409 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-66409?: Check whether you run Ecovacs DEEBOT PRO K1VAC or Ecovacs DEEBOT PRO M1 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

This vulnerability (CVE-2026-66409) is a weak password implementation (CWE-1391) in the Wi-Fi hotspot network feature of DEEBOT PRO robots. The vulnerability allows an attacker with network proximity to analyze and predict the Wi-Fi password, gaining connection to the robot's access point without authentication. No special tools or authentication are required beyond the ability to interact with the Wi-Fi hotspot; the password can be cracked through conventional analysis or dictionary attacks. Successful exploitation grants an attacker direct access to the robot's network interface, enabling potential information disclosure or further compromise of the device. Patches are available in DEEBOT PRO M1 firmware version M1-1.7.27 and later, and DEEBOT PRO K1VAC version V1.7.821 and later.

Affected products

ECOVACS DEEBOT PRO M1 prior to M1-1.7.27
ECOVACS DEEBOT PRO K1VAC prior to V1.7.821

Timeline

2026-07-31: disclosed
2026-01-31: patched: Initial patches released; K1VAC received additional update on 2026-03-23
2026-08-10: advisory

References

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