CVE-2025-55090 Potential out of bound read issue in _nx_ipv4_packet_receive() in NetX Duo

Medium 6.9 Published 16 Oct 2025 Updated 16 Oct 2025

An out-of-bounds read in NetX Duo allows attackers to cause denial of service or disclose memory contents via malformed Ethernet frames.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-55090?

CVE-2025-55090 is a medium-severity memory corruption vulnerability in Eclipse Foundation NetX Duo, published on 16 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

In NetX Duo before 6.4.4, the networking support module for Eclipse Foundation ThreadX, there was a potential out of bound read issue in _nx_ipv4_packet_receive() function when received an Ethernet frame with less than 4 bytes of IP packet.

Weakness: CWE-126, CWE-125

Which versions are affected by CVE-2025-55090?

It affects 1 product.

Products include Eclipse Threadx Netx Duo.

How do I fix CVE-2025-55090?

No fix has been published for CVE-2025-55090 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2025-55090 being exploited?

There is no known exploitation of CVE-2025-55090 in the wild and no public exploit code.

Sources

Also known as GHSA-cf2g-j6vv-m8c5.