CVE-2026-52196
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 · uneditedBuffer Overflow vulnerability in UTT nv518G nv518GV3v3.2.7-210919-161313 allows a remote attacker to cause a denial of service via the gohead/sub_416f28 component
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 confidenceBuffer overflow vulnerability in the gohead/sub_416f28 component of UTT nv518G router firmware v3.2.7-210919-161313 allows a remote attacker to cause denial of service via crafted input to this component.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS 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
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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 the router modelAccess the router's web interface or CLI and retrieve the device model information. Look for 'UTT nv518G' or 'nv518G' in the device info page or system statusAffected if The device is not a UTT nv518G router - this vulnerability only affects that specific model
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Check the installed firmware versionIn the router's web interface, navigate to System Status or Firmware Upgrade page to view the current firmware version. Alternatively, use CLI command 'cat /proc/version' or 'ver' if availableAffected if The firmware version is exactly v3.2.7-210919-161313 - this is the only version listed as affected
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Verify gohead service presenceCheck if the 'gohead' service is running on the device via CLI: 'ps | grep gohead' or by examining the process list in the router's administration interfaceAffected if The gohead service is running and exposed to network access - the vulnerability exists in its sub_416f28 subcomponent
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Check network exposure of the vulnerable componentReview port listings and firewall rules to determine if the gohead component or its sub_416f28 endpoint is accessible from external networks. Look for open ports associated with the gohead serviceAffected if The gohead/sub_416f28 component is reachable from untrusted networks - this enables remote exploitation
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Review component logs for crash indicatorsExamine system logs or gohead service logs for sudden restarts, buffer overflow errors, or crash dumps that may indicate exploitation attemptsAffected if Logs show unexpected gohead service crashes or anomalies consistent with buffer overflow exploitation
You are affected if you have a UTT nv518G router running firmware version v3.2.7-210919-161313 with the gohead service exposed to network access.
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.
From vendor dataContact UTT Technologies for firmware updates addressing this vulnerability; if no patch is available, restrict network exposure of the affected component and implement network segmentation to limit attack surface.
- Consultation4.0 h
- Implementation8.0 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 $5,600.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-52196 — 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-2026-52196 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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- 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
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