CVE-2026-14721
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 vulnerability has been found in UTT HiPER 1250GW up to 3.2.7-210907-180535. This affects an unknown function of the file /goform/ConfigWirelessBase_5g of the component Web Endpoint. The manipulation of the argument ssid leads to stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been disclosed to the public 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 · moderate confidenceStack-based buffer overflow in UTT HiPER 1250GW router firmware's web endpoint /goform/ConfigWirelessBase_5g. The ssid parameter is not properly bounds-checked before being copied to a fixed-size stack buffer, allowing remote attackers to overwrite return addresses and potentially execute arbitrary code.
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 device modelAccess the router's web interface or check the device label/marketing, or query the web interface for the model information (often visible in the login page or status page)Affected if The device is not a UTT HiPER 1250GW router, as this vulnerability only affects that specific model
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Confirm firmware versionLog into the router's web management interface and navigate to the status or system information page to view the installed firmware versionAffected if The firmware version has not been patched by the vendor; since no patched version is specified, compare your version against any release notes from UTT or assume all current versions may be affected
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Verify web management interface accessibilityAttempt to access the router's web interface from an external network (WAN side) by navigating to the router's public IP address on HTTP/HTTPS portsAffected if The web management interface is reachable from the WAN (internet), as remote attackers exploit this vulnerability over the network without authentication
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Check if ConfigWirelessBase_5g endpoint is reachableSend an HTTP GET or POST request to http://<router-ip>/goform/ConfigWirelessBase_5g using a tool like curl or a browserAffected if The endpoint responds (indicating the wireless configuration interface is active and accessible), which is required for the overflow to be triggered
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Determine if 5GHz wireless is enabledLog into the router and check the wireless settings to see if the 5GHz band is configured and enabledAffected if 5GHz wireless is enabled on the device, as the vulnerable parameter is part of the /goform/ConfigWirelessBase_5g endpoint processing
A user is affected if they own a UTT HiPER 1250GW router with an unpatched firmware version and the router's web management interface (especially the wireless configuration endpoint) is accessible to untrusted networks.
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 update when available. Until then, restrict access to the router's web management interface to trusted networks only, disable remote administration, and consider network segmentation.
- Consultation6.0 h
- Implementation16.0 h
- Testing8.0 h
- Review / QA4.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2026-14721 — 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-2026-14721 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
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