CVE-2025-55086: Eclipse Threadx Netx Duo

Critical severity, CVSS 9.8. EPSS: 0.4% chance of exploitation in the next 30 days.

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.

Affected products

• Eclipse Threadx Netx Duo: before 6.4.4.202503 (fixed in 6.4.4.202503)

Published 2025-10-20. Last modified 2026-10-08.