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CVE-2025-55084— Out of bound read in _nx_secure_tls_proc_clienthello_supported_versions_extension()

Quick assessment

Affected
Eclipse Foundation NetX Duo
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Eclipse ThreadX NetX Duo是Eclipse ThreadX开源的一个 IPv4 和 IPv6 双重网络堆栈。 Eclipse ThreadX NetX Duo 6.4.4之前版本存在安全漏洞，该漏洞源于Eclipse Foundation ThreadX组件中_nx_secure_tls_proc_clienthello_supported_versions_extension函数的扩展版本字段边界检查不正确。

AI Predicted 7.5 Difficulty: Moderate EPSS 0.33% · P24

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2025-55084

Vulnerability Information
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Vulnerability Title
Out of bound read in _nx_secure_tls_proc_clienthello_supported_versions_extension()
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
缓冲区上溢读取
Source: CVE Program / CVE List V5
Vulnerability Title
Eclipse ThreadX NetX Duo 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Eclipse ThreadX NetX Duo是Eclipse ThreadX开源的一个 IPv4 和 IPv6 双重网络堆栈。 Eclipse ThreadX NetX Duo 6.4.4之前版本存在安全漏洞，该漏洞源于Eclipse Foundation ThreadX组件中_nx_secure_tls_proc_clienthello_supported_versions_extension函数的扩展版本字段边界检查不正确。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Eclipse Foundation NetX Duo 0 ~ 6.4.4 -

II. Public POCs for CVE-2025-55084

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III. Intelligence Information for CVE-2025-55084

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Vendor Advisories for CVE-2025-55084 (1)

Same Patch Batch · Eclipse Foundation · 2025-10-16 · 4 CVEs total

CVE-2025-55091 Potential out of bound read in _nx_ip_packet_receive()
CVE-2025-55090 Potential out of bound read issue in _nx_ipv4_packet_receive() in NetX Duo
CVE-2025-55089 Eclipse ThreadX FileX RAM disk driver buffer overflow

IV. Related Vulnerabilities

Same product: NetX Duo
Same vendor: Eclipse Foundation
Same weakness: CWE-126

V. Comments for CVE-2025-55084

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