CVE-2026-4318
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 was determined in UTT HiPER 810G up to 1.7.7-171114. Affected is the function strcpy of the file /goform/formApLbConfig. This manipulation of the argument loadBalanceNameOld causes buffer overflow. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized.
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 UTT HiPER 810G routers (versions up to 1.7.7-171114) in the /goform/formApLbConfig form handler. The vulnerable strcpy function copies the loadBalanceNameOld parameter without proper bounds checking, allowing remote attackers to overflow a buffer 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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Confirm device model is UTT HiPER 810GCheck the device label, web interface footer, or system information page for the exact model numberAffected if Device model is not UTT HiPER 810G (not affected)
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Verify web interface is accessibleAttempt to reach the router web interface via browser on the expected IP address (typically http://192.168.1.1 or the configured LAN IP)Affected if Web interface is not reachable (not affected)
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Check if the vulnerable formApLbConfig endpoint existsNavigate to /goform/formApLbConfig in a browser or use curl to request this path from the routerAffected if Endpoint returns a 404 or is not found (likely not affected, but may vary by firmware)
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Determine if remote management is enabledIn the web UI, locate the remote management or administration settings and check if web access from WAN/internet is permittedAffected if Remote management is disabled and the web interface is only accessible from the LAN side (reduced exposure, but device still has the vulnerable code)
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Identify the installed firmware versionAccess the router web UI system status or firmware upgrade page to view the current firmware version numberAffected if Unable to determine firmware version or version falls within unknown affected ranges (assume potentially affected if version cannot be verified)
A user is affected if they have a UTT HiPER 810G router with an accessible web interface where the /goform/formApLbConfig endpoint exists and remote WAN management is enabled, allowing remote exploitation via the loadBalanceNameOld parameter.
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 patches when available; in the interim, restrict network access to the router's management interface and disable or firewall the affected form endpoint.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA3.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2026-4318 — 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-2026-4318 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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