CVE-2023-25218
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 AC5 US_AC5V1.0RTL_V15.03.06.28 was discovered to contain a stack overflow via the form_fast_setting_wifi_set function. This vulnerability allows attackers to cause a Denial of Service (DoS) or execute arbitrary code via a crafted payload.
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 buffer overflow in the form_fast_setting_wifi_set function of Tenda AC5 firmware US_AC5V1.0RTL_V15.03.06.28 allows remote attackers to overwrite stack memory via a crafted WiFi configuration payload, potentially achieving arbitrary code execution or causing device DoS.
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= 15.03.06.28CVSS 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 the device modelCheck the device label or administrative interface for the exact model number. Confirm it is a Tenda AC5 router.Affected if The device is not a Tenda AC5 model.
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Determine the firmware versionAccess the router's web administration panel (typically at 192.168.0.1) and look in System Settings > Firmware Update or similar, or use the router's mobile app if available. Alternatively, check the firmware file name if you have access to the firmware binary.Affected if The firmware version is not 15.03.06.28.
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Check if the WiFi setup function is exposedIdentify whether the form_fast_setting_wifi_set endpoint is accessible. This is typically accessed during initial WiFi configuration or through the WiFi settings page in the administrative interface.Affected if The device has already been configured and the fast setting WiFi function is not accessible.
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Assess network exposureDetermine if the router's administrative interface is accessible from the WAN (Internet) side. Check port forwarding rules, remote management settings (often labeled as 'Remote Management' or 'Web Management from WAN'), and firewall rules.Affected if The administrative interface is only accessible from the LAN (local network) side.
A user is affected only if they have a Tenda AC5 router running firmware version 15.03.06.28 and the form_fast_setting_wifi_set function is accessible from an attacker-controlled network location.
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 if available; otherwise restrict network exposure to the device and disable remote management interfaces.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 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 $5,600.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-25218 — 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-2023-25218 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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