# CVE-2025-55086: In NetXDuo version before 6.4.4, a networking support module for Eclipse Foundation ThreadX, in the DHCPV6 client…

Source: https://junglewise.ai/threats/cve-2025-55086-in-netxduo-version-before-6-4-4-a-networking-support-module-for  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2025-10-20  
License: CC BY 4.0 with a link back

CVE-2025-55086 · Severity: critical · CVSS 9.8 · Published 2025-10-20

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.

Technologies: [Eclipse Threadx Netx Duo](https://junglewise.ai/threats/technologies/threadx-netx-duo). Vendors: [Eclipse](https://junglewise.ai/threats/vendors/eclipse).

## Quick answers

**Is CVE-2025-55086 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-55086 being exploited in the wild.

**How severe is CVE-2025-55086?** Critical severity, with a CVSS score of 9.8, published 20 October 2025.

**Which products and versions are affected?** Eclipse Threadx Netx Duo. The advisory does not name versions.

**Is there a fix for CVE-2025-55086?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected by CVE-2025-55086?** Check whether you run Eclipse Threadx Netx Duo. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Eclipse Threadx Netx Duo

## Related threats

- [Eclipse ThreadX NetX Duo NULL pointer dereference in IPv6 raw socket send](https://junglewise.ai/threats/cve-2026-115403-in-eclipse-threadx-netx-duo-versions-6-0-through-6-5-2-202603a)
- [Eclipse ThreadX NetX Duo DTLS session pool exhaustion](https://junglewise.ai/threats/cve-2026-115215-in-eclipse-threadx-netx-duo-versions-6-0-through-6-5-2-202603a)
- [Eclipse ThreadX NetX Duo out-of-bounds read in MSRP attribute parsing](https://junglewise.ai/threats/cve-2026-102725-out-of-bounds-read-from-unvalidated-msrp-attribute-list-length)
- [A denial-of-service vulnerability exists in the NetX IPv6 component functionality of Eclipse ThreadX NetX Duo. A…](https://junglewise.ai/threats/cve-2025-55102-a-denial-of-service-vulnerability-exists-in-the-netx-ipv6)
- [In NextX Duo before 6.4.4, in the HTTP client module, the network support code for Eclipse Foundation ThreadX, the…](https://junglewise.ai/threats/cve-2025-55085-in-nextx-duo-before-6-4-4-in-the-http-client-module-the-network)