CVE-2025-55084

In NetX Duo version before 6.4.4, the component of Eclipse Foundation ThreadX, there was an incorrect bound check in_nx_secure_tls_proc_clienthello_supported_versions_extension() in the extension version field.

CVSS 4.0

6.9CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

CVSS 3.1

5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS

0.3% chance of exploitation in the next 30 days; higher than 25% of CVEs (scores of 2026-10-25)

CWE

CWE-126

Published

2025-10-16

Modified

2026-10-08

Record from

the NVD, synced 2026-10-19

Affected

• eclipse:threadx_netx_duo

References

• https://github.com/eclipse-threadx/netxduo/security/advisories/GHSA-m474-39rw-v8gm

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