CVE-2026-7413: Yarbo Lawn Mower Firmware

Critical severity, CVSS 9.8. EPSS: 0.7% chance of exploitation in the next 30 days.

A hidden, persistent backdoor was found in Yarbo firmware v2.3.9 that provides remote, unauthenticated (or weakly authenticated) access to privileged functionality. The backdoor is undocumented, cannot be disabled via user-facing settings, and survives factory reset and ordinary firmware updates.

Affected products

  • Yarbo Lawn Mower Firmware: version 2.3.9 only
  • Yarbo Lawn Mower Pro Firmware: version 2.3.9 only

Published 2026-05-07. Last modified 2026-06-17.