by Kastro
Paper/Archive/CVE-2026-7413

CVE-2026-7413

Yarbo Firmware — Persistent undocumented backdoor access in Yarbo robot

EPSS 0.6%public exploitCVSS 9.8
critical.is priorityof 100
49
CVSS 9.8 (NVD)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 47.5.475 × 209.5Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
Firmware≤ 2.3.9–CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AHA (CNA)7.2CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: poc · Automatable: no · Technical impact: total

References

writeupgithub.com/Bin4ry/yarbo-nat-in-my-back-yardwriteuptakeonme.org/gcves/GCVE-1337-2026-00000000000000000000000000000000000000000000000000111111111111111111111110000000000000000000000000000000000000000000000000000000111exploittakeonme.org/cves/cve-2026-7413