CVE-2026-7413 PUBLISHED

Persistent undocumented backdoor access in Yarbo robot

Assigner: AHA
Reserved: 29.04.2026 Published: 07.05.2026 Updated: 07.05.2026

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.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS Score: 7.2

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	High	Integrity Impact	High
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	Yarbo
Product	Firmware
Versions	Default: unaffected affected from 0 to 2.3.9 (incl.)

Credits

Andreas Makris (aka Bin4ry) finder
todb of AHA! coordinator

References

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

Problem Types

CWE-912 Hidden Functionality CWE