CVE-2026-7415

Open MQTT orchestration without read/write ACLs in Yarbo robot firmware

State: Published
Severity: 9.8 Critical
Published: May 7, 2026
Updated: May 7, 2026
Reserved: Apr 29, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	9.8 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	AHA

Weaknesses

CWE-306 Missing authentication for critical function

Affected Products

Product	Versions
FirmwareYarbo	2.3.9 and earlierAffected

References

https://github.com/Bin4ry/yarbo-nat-in-my-back-yardthird-party-advisory
https://takeonme.org/gcves/GCVE-1337-2026-00000000000000000000000000000000000000000000000000111111111100111111111110000000000000000000000000000000000000000000000000000001001third-party-advisory

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