Missing HelloVerifyRequest cookie validation in the NetX Secure DTLS server
Summary
| CVE | CVE-2026-106465 |
|---|---|
| State | PUBLISHED |
| Assigner | eclipse |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-10-14 18:17:25 UTC |
| Updated | 2026-11-04 14:17:20 UTC |
| Description | In Eclipse ThreadX NetX Duo versions 6.0 through 6.5.2.202603, the NetX Secure DTLS server never compares the cookie a client returns with the one it issued, and treats any non-empty cookie as verified. A remote attacker can make the server send its full handshake flight, several kilobytes, to a forged source address, using it to reflect amplified traffic at a third party. |
Risk And Classification
Primary CVSS: v4.0 6.9 MEDIUM from [email protected]
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS: 0.003070000 probability, percentile 0.236170000 (date 2026-11-04)
Problem Types: CWE-290 | CWE-406 | CWE-290 CWE-290 Authentication Bypass by Spoofing | CWE-406 CWE-406 Insufficient Control of Network Message Volume (Network Amplification)
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 4.0 | [email protected] | Secondary | 6.9 | MEDIUM | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:L/E:X/C... |
| 4.0 | CNA | CVSS | 6.9 | MEDIUM | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:L |
CVSS v4.0 Breakdown
Attack Vector
NetworkAttack Complexity
LowAttack Requirements
NonePrivileges Required
NoneUser Interaction
NoneConfidentiality
NoneIntegrity
NoneAvailability
NoneSub Conf.
NoneSub Integrity
NoneSub Availability
LowCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Eclipse Foundation | Eclipse ThreadX NetX Duo | affected 6.0 6.5.2.202603 custom | Not specified |
| CNA | Eclipse Foundation | Eclipse ThreadX NetX Duo | unaffected 6.5.2.202603a custom | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| gitlab.eclipse.org/security/cve-assignment/-/work_items/379 | [email protected] | gitlab.eclipse.org | |
| github.com/eclipse-threadx/netxduo/security/advisories/GHSA-7c5f-gmpm-f655 | [email protected] | github.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: fdesbiens (en)
There are currently no legacy QID mappings associated with this CVE.