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CVE-2026-86585— Improper Verification of the Firmware Signature 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 Wi-Fi 监控设备中，01.48.001 之前版本的固件更新包缺乏签名验证，使得能够控制更新分发的攻击者可以安装未经授权的固件。

CVSS 7.7 · High
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I. Basic Information for CVE-2026-86585

Vulnerability Information
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Vulnerability Title
Improper Verification of the Firmware Signature vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
The lack of signature verification of firmware update packages in VEO and VEO-XS Wi-Fi monitors, in versions prior to 01.48.001, allows an attacker who controls the delivery of an update to install unauthorised firmware.
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
密码学签名的验证不恰当
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-2026-86585

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III. Intelligence Information for CVE-2026-86585

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Other References for CVE-2026-86585 (1)

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

CVE-2026-86474 7.7 HIGH Improper Certificate Validation in the Firmware Download 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-347

V. Comments for CVE-2026-86585

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