CVE-2026-7415
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedThe 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.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceThe embedded MQTT broker in Yarbo firmware v2.3.9 accepts anonymous connections with no access control lists. An attacker on the local network can directly subscribe to all telemetry topics to exfiltrate sensitive robot data, and can publish arbitrary control messages to command the robot without any authentication.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data= 2.3.9= 2.3.9CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Confirm firmware versionCheck the installed firmware version of the Yarbo Lawn Mower or Lawn Mower Pro. This is typically shown in the device settings, companion app, or accessible via the device's admin interface. Compare your version to 2.3.9.Affected if Firmware version is exactly 2.3.9 (the only affected version listed)
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Locate MQTT broker configurationFind the MQTT broker configuration files or settings on the device. This is typically in a config directory, embedded within the firmware image, or accessible via the device's web interface or API documentation.Affected if The device runs an embedded MQTT broker (this is the vulnerable component)
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Verify MQTT authentication is disabledInspect the MQTT broker configuration for authentication settings. Look for parameters that control username/password requirements or anonymous access. Check if authentication is explicitly disabled or if no credentials are defined.Affected if Anonymous connections are allowed (no username/password required to connect to the MQTT broker)
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Check for Access Control List configurationInspect the MQTT broker settings for any Access Control List (ACL) definitions that restrict which topics clients can subscribe to or publish on.Affected if No ACLs are defined, or ACLs are absent entirely from the broker configuration
You are affected if your firmware is version 2.3.9 AND the embedded MQTT broker allows anonymous connections without any access control lists configured.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataEnable MQTT authentication with strong credentials and implement topic-level ACLs to restrict subscribe/publish access to authorized clients only. If the broker lacks ACL support, migrate to a broker that provides these controls.
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-7415 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2026-7415 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
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