CVE-2023-44020
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 · uneditedTenda AC10U v1.0 US_AC10UV1.0RTL_V15.03.06.49_multi_TDE01 was discovered to contain a stack overflow via the security parameter in the formWifiBasicSet function.
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 confidenceA stack-based buffer overflow vulnerability exists in the Tenda AC10U router firmware v15.03.06.49 where the 'security' parameter passed to the formWifiBasicSet function lacks proper bounds checking. An attacker can send overly long input to this WiFi configuration endpoint, overflowing the stack and potentially enabling remote code execution.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data= 15.03.06.49_multi_tde01CVSS 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
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/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 router firmware versionLog into the router web interface and navigate to System Settings > Firmware Upgrade, or check the bottom of the router for a label showing the firmware version. Alternatively, use nmap or curl to probe the web interface for version information in the HTML or HTTP headers.Affected if The firmware version is exactly 15.03.06.49_multi_tde01 (the only affected version listed).
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Confirm the device is a Tenda AC10UVerify the router model number through the web interface status page, the physical device label, or by examining the HTTP responses from the router which may contain model identifiers in the HTML.Affected if The device is not a Tenda AC10U, the vulnerability does not apply.
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Determine if web management interface is externally accessibleAttempt to access the router web interface from an external network (outside the local LAN) by navigating to the router's public IP. Check router firewall settings under Advanced > Security or Access Control to see if remote management is enabled.Affected if Remote web management is enabled and the interface is reachable from untrusted networks, the attack surface is present.
You are affected only if you are running Tenda AC10U firmware version 15.03.06.49_multi_tde01 and the router web interface is accessible to the attacker (remote management enabled or attacker on the same network).
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; in the interim, disable remote web management, restrict management interface to trusted IPs via firewall rules, or isolate affected devices on a constrained network segment.
- Consultation3.0 h
- Implementation4.0 h
- Testing3.0 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 $3,408.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-44020 — 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-2023-44020 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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