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VulnerabilityPublished Updated

CVE-2026-7413: Yarbo Firmware · Hidden Functionality

Affects Yarbo FirmwareSource CVE Database V5

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Not known to be exploited · CVSS 7.2 High.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 3.1 base score
7.2High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.5% chance of exploitation in 30 days – higher than 47% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 7 May 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
YarboFirmwareAffected
  • <=2.3.9
Fixed in–

AI-suggested

Until a patch is released, consider isolating affected devices from untrusted networks to reduce exposure. Avoid relying on factory resets or firmware updates as they do not remove the backdoor.

Description

CVE-2026-7413 is a high-severity vulnerability in Yarbo firmware version 2.3.9 involving a hidden, persistent backdoor. This backdoor allows remote access to privileged functionality without authentication or with weak authentication. It is undocumented, cannot be disabled through user settings, and persists through factory resets and normal firmware updates. The vulnerability has a CVSS score of 7.2, indicating significant impact on confidentiality, integrity, and availability. No official patch or remediation guidance is currently available from the vendor. There are no known exploits in the wild at this time.

References

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