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Vulnerability record · CVE-2026-7415 · published 7 May 2026

CVE-2026-7415: Yarbo lawn mower firmware missing authentication for critical function vulnerability

Yarbo · Lawn Mower Firmware

The MQTT broker embedded in Yarbo firmware v2.3.9 is configured to allow anonymous connections with no topic-level read or write ACLs. Any host on the same network can subscribe to sensitive telemetry topics or publish control messages directly to the robot without authentication or authorization of any kind.

9.8 CVSS 3.1 Critical EPSS 0.71% · top 48.2% CWE-306 · Missing authentication for critical function
9.8CVSS 3.1 base score
0.71%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
3References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

The MQTT broker embedded in Yarbo firmware v2.3.9 is configured to allow anonymous connections with no topic-level read or write ACLs. Any host on the same network can subscribe to sensitive telemetry topics or publish control messages directly to the robot without authentication or authorization of any kind.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/Bin4ry/yarbo-nat-in-my-back-yard ExploitThird Party Advisory
https://takeonme.org/gcves/GCVE-1337-2026-000000000000000000000000000000000000000000000000001111111111001111111111100000 Third Party Advisory
https://github.com/Bin4ry/yarbo-nat-in-my-back-yard ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-7415), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.