---
id: CVE-2026-86474
title: >-
  The lack of TLS certificate validation when downloading firmware updates in
  VEO and VEO-XS Wi-Fi monitors, in versions prior to 01.48.001, allows an
  attacker to perform man-in-the-middle attacks on the update channel.
summary: >-
  The lack of TLS certificate validation when downloading firmware updates in
  VEO and VEO-XS Wi-Fi monitors, in versions prior to 01.48.001, allows an
  attacker to perform man-in-the-middle attacks on the update channel.
severity: high
cvss: 7.7
cvssVector: 'CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'
cwe:
  - CWE-295
vendor: Fermax Electronica S.A.U.
product: DUOX PLUS monitor firmware (VEO Wi-Fi range)
affected:
  - duox_plus_monitor_firmware_veo_wi-fi_range < 01.48.001
published: '2026-09-16'
updated: '2026-09-18'
sourceUpdated: '2026-09-18T19:44:10.957'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-86474'
references:
  - url: 'https://fermax.com/security-advisories'
    label: 539080bd-5750-4cce-b30b-eed9a4ef6dcc
tags:
  - nvd
  - cve.org
epss: 0.00125
epssPercentile: 0.01883
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-16T13:25:22.550164Z'
cvssSource: cna
ingestedAt: '2026-09-16T10:53:53.924Z'
---

## Overview

The lack of TLS certificate validation when downloading firmware updates in VEO and VEO-XS Wi-Fi monitors, in versions prior to 01.48.001, allows an attacker to perform man-in-the-middle attacks on the update channel.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.