NetX Duo <6.4.4: Incorrect bound check in TLS ext. version field (ThreadX)
CVE-2025-55084 Published on October 16, 2025
Out of bound read in _nx_secure_tls_proc_clienthello_supported_versions_extension()
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.
Weakness Type
Buffer Over-read
The software reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer. This typically occurs when the pointer or its index is incremented to a position beyond the bounds of the buffer or when pointer arithmetic results in a position outside of the valid memory location to name a few. This may result in exposure of sensitive information or possibly a crash.
Affected Versions
Eclipse Foundation NetX Duo:- Before 6.4.4 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.