CVE-2023-44023
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 ssid parameter in the form_fast_setting_wifi_set 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 confidenceStack-based buffer overflow in Tenda AC10U router web interface. The form_fast_setting_wifi_set function fails to validate the length of the ssid parameter before copying it to a fixed-size stack buffer, allowing an attacker to overwrite return addresses and achieve 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 device modelAccess router web interface or check device label/metadata to confirm the model is Tenda AC10UAffected if Device is not a Tenda AC10U router (different models are not affected by this specific CVE)
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Check installed firmware versionLog into router web interface and navigate to System Settings > Firmware Upgrade, or use telnet/SSH to run 'cat /proc/version' or 'cat /etc/os release' to retrieve the firmware versionAffected if Firmware version is exactly 15.03.06.49_multi_tde01 (only this specific version is listed as affected)
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Verify web interface is enabled and accessibleAttempt to access the router login page via HTTP/HTTPS on common web ports (80, 443, 8080). Check router administration settings for remote web management statusAffected if Web interface is disabled or unreachable (the vulnerability requires the web interface to be active to exploit the form_fast_setting_wifi_set function)
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Confirm vulnerable function existsIf firmware can be extracted or telnet/SSH access is available, examine the binary (likely httpd) for the form_fast_setting_wifi_set function using strings or binary analysis toolsAffected if The form_fast_setting_wifi_set function is present in the firmware binary and handles the ssid parameter without length validation
You are affected if you have a Tenda AC10U router running firmware version 15.03.06.49_multi_tde01 with the web interface enabled, as this specific version contains the vulnerable form_fast_setting_wifi_set function that does not validate ssid parameter length.
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 if available; otherwise disable remote web management, replace device, or implement network segmentation to limit exposure to local network attackers.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 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 $5,120.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-44023 — 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-2023-44023 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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