Vulnerability · Published Sep 29, 2026 · Assigned by eclipse
CVE-2026-102720DHCP client option walk drifts one byte per skipped option, reading past the received message and past the saved options buffer
Medium 5.3
In plain English
A medium-severity out-of-bounds read in Eclipse ThreadX NetX Duo from Eclipse Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 4% of all known vulnerabilities).
Official description
In Eclipse ThreadX NetX Duo versions 6.0 through 6.5.2.202603a, the DHCP client's option walk advances its offset one byte less than its read pointer for every option it skips. A DHCP server, or any host on the link that answers first, can make the client read up to about a kilobyte past the received message, and the same walk copies out-of-bounds bytes into the application's buffer when it retrieves a user option.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Eclipse Foundation | Eclipse ThreadX NetX Duo | 6.0 – through 6.5.2.202603a |
Weakness: CWE-125, CWE-193 · Vector: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N