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7.8
CVE-2025-55083: ThreadX NetX Duo may read beyond memory causing crash
CVE-2025-55083 · published 1 year ago
Summary
The ThreadX NetX Duo library before version 6.4.4 can read past the end of a data buffer when processing a TLS client hello message. This out‑of‑bounds read could lead to application instability or unexpected behavior. Update to version 6.4.4 or later to fix the issue.
What to do
- Update eclipse threadx_netx_duo to version 6.4.4.202503 or later.
Affected software
| Vendor | Product | Affected versions |
|---|---|---|
| eclipse | threadx_netx_duo |
< 6.4.4.202503 cpe:2.3:a:eclipse:threadx_netx_duo:*:*:*:*:*:*:*:* |
Original advisory text
Broken bounds check in Broken bounds check in _nx_secure_tls_process_clienthello_psk_extension()
In NetX Duo version before 6.4.4, the component of Eclipse Foundation ThreadX, there was an incorrect bound check resulting it out by two out of bound read.
References
- https://github.com/eclipse-threadx/netxduo/ URL
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/55xxx/CVE-2025-55083... Vendor Advisory
- https://github.com/eclipse-threadx/netxduo/security/advisories/GHSA-9hw5-4xcv-jp... Vendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2025-55083 Vendor Advisory
Internet-facing
60 days
Internal
At next upgrade
- Not known to be exploited
- Needs hands-on effort to exploit
- Gives an attacker partial control
Severity
7.8
High
Type
CWE-126Buffer Over-read
Timeline
Published15 Oct 2025
Updated4 Nov 2026
First seen7 Mar 2026
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