Is CVE-2026-66405 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-66405 being exploited in the wild.

How severe is CVE-2026-66405?

High severity, with a CVSS score of 8.8, 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-2026-66405?

A patch was published on 2026-01-31: DEEBOT PRO M1 version M1-1.7.27 and K1VAC version K1VAC-1.7.82 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-66405 attacked?

It is attacked over the network.

Am I affected by CVE-2026-66405?

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-2026-66405: ECOVACS DEEBOT PRO telnet authentication bypass

CVE-2026-66405 · Severity: high · CVSS 8.8 · Published 2026-08-10

ECOVACS DEEBOT robotic cleaners leave a telnet debugging service enabled by default, allowing any network attacker to remotely log in and take full control of the device. An attacker can issue arbitrary commands with administrative privileges, access stored location maps and activity logs, and redirect the robot's movements or disable cleaning functions, impacting operations and privacy.

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

Quick answers

Is CVE-2026-66405 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-66405 being exploited in the wild.
How severe is CVE-2026-66405?: High severity, with a CVSS score of 8.8, 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-2026-66405?: A patch was published on 2026-01-31: DEEBOT PRO M1 version M1-1.7.27 and K1VAC version K1VAC-1.7.82 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-66405 attacked?: It is attacked over the network.
Am I affected by CVE-2026-66405?: 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

CVE-2026-66405 is a disabled-by-default debugging service vulnerability (CWE-489) affecting telnet on DEEBOT PRO M1 and K1VAC robotic cleaners. The telnet service is left enabled in the firmware, requiring no authentication to connect over the network (AV:N). Once authenticated via telnet (which is trivial when no password is enforced), an attacker gains administrative shell access and can execute arbitrary commands with full system privileges, including file access, service manipulation, and code execution. The vulnerability was disclosed on 2026-07-31 and patches were released in January 2026 (M1-1.7.27, K1VAC-1.7.821) with a subsequent K1VAC update on 2026-03-23 (V1.7.821).

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: DEEBOT PRO M1 version M1-1.7.27 and K1VAC version K1VAC-1.7.82 released
2026-03-23: patched: DEEBOT PRO K1VAC version V1.7.821 released with additional fixes
2026-08-04: advisory: JVNVU#92804348 advisory updated
2026-08-10: other: CVE-2026-66405 published on NVD

References

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