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CVE-2026-86474— Improper Certificate Validation in the Firmware Download vulnerability

Quick assessment

Affected
Fermax Electronica S.A.U. DUOX PLUS monitor firmware (VEO Wi-Fi range)
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 VEO 和 VEO-XS 无线监控设备的固件更新下载过程中，在版本 01.48.001 之前，由于缺少对 TLS 证书的验证，攻击者可以利用该缺陷在更新通道上实施中间人攻击。

CVSS 7.7 · High
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I. Basic Information for CVE-2026-86474

Vulnerability Information
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Vulnerability Title
Improper Certificate Validation in the Firmware Download vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
证书验证不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Fermax Electronica S.A.U. DUOX PLUS monitor firmware (VEO Wi-Fi range) 0 ~ 01.48.001 -

II. Public POCs for CVE-2026-86474

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III. Intelligence Information for CVE-2026-86474

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Other References for CVE-2026-86474 (1)

Same Patch Batch · Fermax Electronica S.A.U. · 2026-09-16 · 4 CVEs total

CVE-2026-86585 7.7 HIGH Improper Verification of the Firmware Signature vulnerability
CVE-2026-85628 7.0 HIGH Cleartext Transmission of Sensitive Information in the Pairing Process vulnerability
CVE-2026-86443 6.9 MEDIUM Cleartext Storage of Sensitive Information Vulnerability

IV. Related Vulnerabilities

Same product: DUOX PLUS monitor firmware (VEO Wi-Fi range)
Same vendor: Fermax Electronica S.A.U.
Same weakness: CWE-295

V. Comments for CVE-2026-86474

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