Medium severity · published Oct 16, 2025
CVE-2025-55084
Out of bound read in _nx_secure_tls_proc_clienthello_supported_versions_extension()
5.3
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 26% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ND
NetX Duo · Eclipse Foundation
before 6.4.4 · source: vendor
TN
Threadx Netx Duo · Eclipse
before 6.4.4.202503 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-55084
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-55084
Vendor Advisory
https://github.com/eclipse-threadx/netxduo/security/advisories/GHSA-m474-39rw-v8gm
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