Vulnerability details

CVE-2026-7415

Yarbo Firmware

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

CVSS 3.1

9.8Critical

Official 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 scores

Score	Version	Source	Vector
9.8Critical	3.1	CVEProject cvelistV5 (CNA) (AHA)	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`

Affected products

Vendor	Product	Versions	Source
Yarbo	Firmware	v ≤ 2.3.9	CVEProject cvelistV5 (CNA)

References and advisories

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

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Details

Published: 2026-05-07
Last updated: 2026-05-07
State: Published
Assigner (CNA): AHA

Exploit prediction (EPSS)

0.54%

Probability of exploitation in 30 days

45.8%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: Yes
Exploitation: Proof of concept
Technical impact: Total

Weaknesses (CWE)

CWE-306
Missing authentication for critical function