CVE-2025-55084: Eclipse Threadx Netx Duo

Medium severity, CVSS 5.3. EPSS: 0.3% chance of exploitation in the next 30 days.

In NetX Duo version before 6.4.4, the component of Eclipse Foundation ThreadX, there was an incorrect bound check in_nx_secure_tls_proc_clienthello_supported_versions_extension() in the extension version field.

Affected products

• Eclipse Threadx Netx Duo: before 6.4.4.202503 (fixed in 6.4.4.202503)

Published 2025-10-16. Last modified 2026-10-08.