CVE-2026-86474 Improper Certificate Validation in the Firmware Download vulnerability
Attackers can intercept firmware updates via man-in-the-middle attacks due to missing TLS validation, potentially installing malicious code on VEO monitors.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-86474?
CVE-2026-86474 is a high-severity vulnerability in Fermax Electronica S.A.U. DUOX PLUS monitor firmware (VEO Wi-Fi range), published on 16 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-295
Which versions are affected by CVE-2026-86474?
How do I fix CVE-2026-86474?
No fix has been published for CVE-2026-86474 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-86474 being exploited?
There is no known exploitation of CVE-2026-86474 in the wild and no public exploit code.
Sources
Also known as GHSA-p3f8-3247-775c.