A vulnerability classified as problematic was found in Eclipse NetX Duo up to 6.4.3. Impacted is the function in_nx_secure_tls_proc_clienthello_supported_versions_extension. Executing manipulation of the argument extension version can lead to buffer over-read.

This vulnerability is tracked as CVE-2025-55084. The attack can be launched remotely. No exploit exists.

Upgrading the affected component is advised.