PT-2026-38458 · Yarbo · Firmware

Andreas Makris + 1 · Published 2026-05-07 · Updated 2026-05-07 · CVE-2026-7413

NVD

CVSS v3.1

7.2

High

Base vector

AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

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.

Fix

Hidden Functionality

Weakness Enumeration

CWE-912

Related Identifiers

CVE-2026-7413

Affected Products

Firmware

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-7413 · Security Note
• https://github.com/Bin4ry/yarbo-nat-in-my-back-yard · Note
• https://takeonme.org/gcves/GCVE-1337-2026-00000000000000000000000000000000000000000000000000111111111111111111111110000000000000000000000000000000000000000000000000000000111 · Note