Open MQTT orchestration without read/write ACLs in Yarbo robot firmware
Priority HIGH 82CWE-306Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-306.
Summary
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.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00544 45th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Yarbo | Firmware | up to 2.3.9 | — | No fix listed | CNA |
- Firmware VendorYarbo Affected up to 2.3.9 Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:yarbo:lawn_mower_firmware:2.3.9:*:*:*:*:*:*:* | 2.3.9 | Vulnerable | Yarbo |
| cpe:2.3:h:yarbo:lawn_mower:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Yarbo |
| cpe:2.3:o:yarbo:lawn_mower_pro_firmware:2.3.9:*:*:*:*:*:*:* | 2.3.9 | Vulnerable | Yarbo |
| cpe:2.3:h:yarbo:lawn_mower_pro:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Yarbo |
- cpe:2.3:o:yarbo:lawn_mower_firmware:2.3.9:*:*:*:*:*:*:* Versions 2.3.9 Vulnerable ·Yarbo
- cpe:2.3:h:yarbo:lawn_mower:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Yarbo
- cpe:2.3:o:yarbo:lawn_mower_pro_firmware:2.3.9:*:*:*:*:*:*:* Versions 2.3.9 Vulnerable ·Yarbo
- cpe:2.3:h:yarbo:lawn_mower_pro:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Yarbo
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-7415
- 2026-10-03 Alias added: GHSA-5jxr-5v22-49gf
- 2026-10-25 EPSS moved to the below the 50th percentile
References
More Yarbo Lawn Mower Firmware vulnerabilities
- TI-2026-06517 Hardcoded credentials in Yarbo robot firmware CVSS 3.1CRITICAL 9.8
- TI-2026-06516 Persistent undocumented backdoor access in Yarbo robot CVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-7415 · CVE Program
- CVE-2026-7415 · NVD
- FIRST EPSS
- GHSA-5jxr-5v22-49gf · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences