CVE-2026-94018

NetX Duo Web HTTP server releases an uninitialized packet pointer on the PUT Content-Length underflow path

State: Published
Severity: 8.8 High
Published: Oct 20, 2026
Updated: Oct 20, 2026
Reserved: Sep 23, 2026

Description

The Web add-on's HTTP server dereferences and releases an uninitialized pointer when it detects a `Content-Length` underflow while processing a `PUT` request. The condition is reachable by an unauthenticated remote client with a single malformed request.

Scores

CVSS	Score	Vector	Source
4.0	8.8 High	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N	eclipse

Weaknesses

CWE-457 Use of Uninitialized Variable
CWE-824 Access of Uninitialized Pointer

Affected Products

Product	Versions
Eclipse ThreadX - NetX DuoEclipse Foundation	6.4.2 through 6.5.1.202602Affected 6.5.2.202603Not affected

References

https://github.com/eclipse-threadx/netxduo/security/advisories/GHSA-wjxf-gjm5-jh5q

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