CVE-2025-55083
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedIn 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.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceEclipse Foundation ThreadX (NetX Duo) before version 6.4.4 contains an incorrect bounds check in one of its components, allowing an out-of-bounds read of two bytes. This is a memory safety vulnerability in the RTOS kernel that could allow disclosure of adjacent memory contents.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data< 6.4.4.202503CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify NetX Duo installationLocate the ThreadX/NetX Duo library or header files in your firmware image, build system, or development environment. Common locations include /include/ in the ThreadX distribution, or embedded in the compiled firmware binary.Affected if NetX Duo library is present in your system
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Determine NetX Duo versionInspect the version information in the NetX Duo headers (typically nx_port.h or similar version header), the library binary, or firmware metadata. Look for version strings or version constants.Affected if Version is displayed as less than 6.4.4 or less than 6.4.4.202503
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Verify build configurationCheck if the specific component with the incorrect bounds check is included in your build. This is typically part of the NetX Duo TCP/IP stack. Review your project configuration to confirm NetX Duo is linked.Affected if NetX Duo TCP/IP stack component is present in your build
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Cross-reference with firmware versionIf NetX Duo is bundled in a firmware image, identify the firmware version and check the NetX Duo version it embeds. This information may be in release notes, SBOM, or embedded version strings.Affected if Firmware uses an older NetX Duo version below 6.4.4.202503
Your environment is affected if your deployed NetX Duo version is earlier than 6.4.4.202503 and includes the TCP/IP stack component.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scoped6.4.4.202503
Upgrade NetX Duo to version 6.4.4 or later to obtain the corrected bounds checking logic.
NetX Duo 6.4.4.202503 or later
- 1. Identify the current version of NetX Duo being used in your system
- 2. If the version is earlier than 6.4.4.202503, obtain and apply NetX Duo version 6.4.4.202503 or later from the Eclipse Foundation ThreadX repository
- 3. Rebuild and redeploy the firmware/application with the updated NetX Duo library
- 4. Verify the update was successful and test the system to ensure normal functionality
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation4.0 h
- Testing6.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,808.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-55083 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2025-55083 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data