CVE-2026-52198
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_425994 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 confidenceA buffer overflow vulnerability exists in the gohead/sub_425994 component of UTT nv518G router firmware v3.2.7-210919-161313. The flaw allows remote attackers to cause denial of service by overflowing a buffer in 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
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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 the device modelLog into the router admin interface or check the device label to confirm the model is UTT nv518GAffected if The device is not a UTT nv518G router, then it is not affected by this specific CVE
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Check the firmware versionAccess the router admin panel, typically at 192.168.1.1, and navigate to System Status or Firmware Information to view the installed firmware versionAffected if The firmware version matches v3.2.7-210919-161313 exactly, or is earlier than the patched version if known, then it is likely affected
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Verify the gohead service is accessibleCheck if the gohead web service is exposed on the router by attempting to access it via HTTP/HTTPS from the network, or review firewall rules and port forwarding settingsAffected if The gohead service is exposed to untrusted network segments and the firmware version is vulnerable, then remote exploitation is possible
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Monitor for denial of service indicatorsReview router logs for crashes, unexpected reboots, or service failures, and check network monitoring tools for connectivity interruptions to the routerAffected if The router experiences unexplained crashes or becomes unreachable and the firmware version is vulnerable, this may indicate exploitation of this buffer overflow
The environment is affected if the UTT nv518G router is running firmware v3.2.7-210919-161313 or earlier and the gohead service is network-accessible.
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 dataUntil an official firmware patch is available, network access to the affected device should be restricted and the device isolated or replaced if possible. Monitor vendor advisories for updates.
- Consultation4.0 h
- Implementation16.0 h
- Testing8.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-52198 — 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-2026-52198 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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