CVE-2025-0726: Eclipse Threadx Netx Duo

High severity, CVSS 7.5. EPSS: 0.8% chance of exploitation in the next 30 days.

In NetX HTTP server functionality of Eclipse ThreadX NetX Duo before version 6.4.2, an attacker can cause a denial of service by specially crafted packets. The core issue is missing closing of a file in case of an error condition, resulting in the 404 error for each further file request. Users can work-around the issue by disabling the PUT request support.

Affected products

• Eclipse Threadx Netx Duo: before 6.4.2 (fixed in 6.4.2)

Published 2025-02-21. Last modified 2026-06-17.