CVE-2026-6186
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 · uneditedA security vulnerability has been detected in UTT HiPER 1200GW up to 2.5.3-170306. This vulnerability affects the function strcpy of the file /goform/formNatStaticMap. The manipulation of the argument NatBind leads to buffer overflow. The attack is possible to be carried out remotely. The exploit has been disclosed publicly and may be used.
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 · high confidenceBuffer overflow vulnerability in UTT HiPER 1200GW routers (firmware up to 2.5.3-170306) in the /goform/formNATStaticMap function. The unsafe strcpy() function copies user-supplied input from the NatBind parameter without bounds checking, allowing potential remote code execution.
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
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/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 device's web interface or check the device label/documentation to confirm the exact model is UTT HiPER 1200GWAffected if The device is not a UTT HiPER 1200GW router, then it is not affected by this specific CVE
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Check the firmware versionLog into the router's web interface and navigate to the status or system information page to view the installed firmware version, or use the command line if accessible to retrieve firmware version informationAffected if The firmware version is 2.5.3-170306 or any version up to and including 2.5.3-170306, then the device is within the affected version range
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Verify web interface accessibilityAttempt to access the router's web interface over HTTP/HTTPS from the network segment where the device is deployedAffected if The web interface is exposed and accessible from network segments where untrusted users could send requests, the device could be exploited
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Check for formNATStaticMap endpoint exposureSend an HTTP GET or POST request to http://[router-ip]/goform/formNATStaticMap to determine if this endpoint exists and respondsAffected if The endpoint responds and accepts parameters including NatBind, the vulnerable function is present and could be exploited if the parameter is used without proper input validation
A user is affected if they have a UTT HiPER 1200GW router running firmware version 2.5.3-170306 or earlier, with the router's web interface and the formNATStaticMap function accessible to potential attackers.
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 dataApply vendor firmware patch when available; until then, restrict network access to the device's web interface via firewall rules or network segmentation to prevent unauthorized exploitation of this buffer overflow.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-6186 — 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-2026-6186 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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- Version or environment caveats, and links to real fixes
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