CVE-2026-106465

The NetX Secure DTLS server sends a HelloVerifyRequest carrying a freshly generated cookie, but never checks the cookie a client returns. The ClientHello parser copies the client's cookie bytes over the value the server issued, and the server then decides whether the client has been verified from the cookie's length alone. A peer that puts any single cookie byte in its first ClientHello skips the verification exchange entirely, so the server has no return-routability check and completes handshakes for forged source addresses.

CVSS

No CVSS.

References

Link	Resource
https://github.com/eclipse-threadx/netxduo/security/advisories/GHSA-7c5f-gmpm-f655
https://gitlab.eclipse.org/security/cve-assignment/-/work_items/379

Configurations

No configuration.

History

14 Oct 2026, 18:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-14 18:17

Updated : 2026-10-16 21:17

NVD link : CVE-2026-106465

Mitre link : CVE-2026-106465

CVE.ORG link : CVE-2026-106465

JSON object : View

Products Affected

No product.

CWE

CWE-290

Authentication Bypass by Spoofing

CWE-406

Insufficient Control of Network Message Volume (Network Amplification)

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