CVE-2025-55086 Memory corruption in NextX Duo

Medium 6.3 Published 20 Oct 2025 Updated 20 Oct 2025

An attacker can cause an out-of-memory read and potential denial of service in the NetXDuo DHCPV6 client via a crafted packet.

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-2025-55086?

CVE-2025-55086 is a medium-severity memory corruption vulnerability in Eclipse Foundation NextX Duo, published on 20 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

In NetXDuo version before 6.4.4, a networking support module for Eclipse Foundation ThreadX, in the DHCPV6 client there was an unchecked index extracting the server DUID from the server reply. With a crafted packet, an attacker could cause an out of memory read.

Weakness: CWE-1285, CWE-125

Which versions are affected by CVE-2025-55086?

It affects 1 product.

Products include Eclipse Threadx Netx Duo.

How do I fix CVE-2025-55086?

No fix has been published for CVE-2025-55086 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-2025-55086 being exploited?

There is no known exploitation of CVE-2025-55086 in the wild and no public exploit code.

Sources

Also known as GHSA-99pw-cp79-2j5j.