CVE-2025-55091 Potential out of bound read in _nx_ip_packet_receive()
An out-of-bounds read in NetX Duo allows attackers to cause denial of service or disclose memory contents via crafted Ethernet packets.
- 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-2025-55091?
CVE-2025-55091 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_ip_packet_receive() function when received an Ethernet with type set as IP but no IP data.
Which versions are affected by CVE-2025-55091?
It affects 1 product.
Products include Eclipse Threadx Netx Duo.
How do I fix CVE-2025-55091?
No fix has been published for CVE-2025-55091 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-2025-55091 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-55091 exists.
Other vulnerabilities in Eclipse Foundation NetX Duo
- CVE-2025-55085 Web http client: Unchecked Server-Side Malicious Packet Issue
- CVE-2025-55102 Denial of service in Eclipse ThreadX - NetX Duo
- CVE-2026-11576 Memory corruption in Eclipse ThreadX - NetX Duo
- CVE-2025-2260 Eclipse ThreadX NetX Duo HTTP component server denial of service
- CVE-2025-0726 Eclipse ThreadX NetX Duo HTTP server denial of service
Sources
Also known as GHSA-pf5q-r6q5-6j2f.