CVE-2026-7413: Persistent undocumented backdoor access in Yarbo robot

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-05-07 · updated 2026-10-26
Weakness: CWE-912

Description

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: 2.3.9
Yarbo Lawn Mower Pro Firmware: 2.3.9

References

https://github.com/Bin4ry/yarbo-nat-in-my-back-yard
https://takeonme.org/gcves/GCVE-1337-2026-00000000000000000000000000000000000000000000000000111111111111111111111110000000000000000000000000000000000000000000000000000000111
https://takeonme.org/cves/cve-2026-7413/

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