CVE-2025-12232
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 detected in Tenda CH22 1.0.0.1. Affected by this vulnerability is the function fromSafeClientFilter of the file /goform/SafeClientFilter. Performing a manipulation of the argument page results in buffer overflow. The attack can be initiated remotely. The exploit is now 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 · high confidenceA buffer overflow vulnerability exists in the Tenda CH22 router firmware (version 1.0.0.1) in the /goform/SafeClientFilter endpoint. The fromSafeClientFilter function fails to properly validate the 'page' parameter before use, allowing an attacker to trigger a buffer overflow via a crafted HTTP request. The vulnerability is remotely exploitable without authentication and has a public exploit, making it critical for affected devices.
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= 1.0.0.1CVSS 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 router modelAccess the router's web interface or check the device label to confirm it is a Tenda CH22 model.Affected if The device is not a Tenda CH22 router, then it is not affected by this specific CVE.
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Check the firmware versionLog into the router web interface and navigate to the System Settings or Firmware Upgrade page to view the current firmware version, or use the command 'cat /proc/version' via telnet/SSH if available.Affected if The firmware version is 1.0.0.1, then the device is running the affected version.
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Verify the vulnerable endpoint existsSend an HTTP GET request to 'http://<device_ip>/goform/SafeClientFilter' using a tool like curl or a browser. A valid response (even an error page) indicates the endpoint is present.Affected if The endpoint returns an HTTP response, indicating the SafeClientFilter handler is enabled on the device.
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Check if remote web management is enabledCheck the router's Administration or Remote Management settings to see if remote access to the web interface is enabled. Look for options like 'Remote Management', 'Web Management', or 'HTTP/HTTPS Access' set to WAN/Internet.Affected if Remote management is enabled and the router is accessible from the WAN, then the vulnerability is remotely exploitable without authentication.
A Tenda CH22 router running firmware version 1.0.0.1 with the web management interface exposed to the network is affected by this buffer overflow vulnerability in the /goform/SafeClientFilter endpoint.
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 dataImmediately check for and apply any vendor firmware updates for the Tenda CH22. If no update is available, restrict network access to the device's web management interface using firewall rules or disable remote administration until a patch is released.
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2025-12232 — 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-2025-12232 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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- Version or environment caveats, and links to real fixes
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