CVE-2025-53711
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 has been found in TP-Link TL-WR841N v11, TL-WR842ND v2 and TL-WR494N v3. The vulnerability exists in the /userRpm/WlanNetworkRpm.htm file due to missing input parameter validation, which may lead to the buffer overflow to cause a crash of the web service and result in a denial-of-service (DoS) condition. The attack may be launched remotely. This vulnerability only affects products that are no longer supported by the maintainer.
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 the TP-Link TL-WR841N v11, TL-WR842ND v2, and TL-WR494N v3 wireless routers in the /userRpm/WlanNetworkRpm.htm web interface. The vulnerability stems from missing input validation on parameters passed to this file, allowing an attacker to overflow a buffer, crash the web service, and cause a denial-of-service condition. The attack can be launched remotely over the network.
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<= 160325CVSS 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
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 hardware label or web interface status page to confirm the exact model number (TL-WR841N v11, TL-WR842ND v2, or TL-WR494N v3)Affected if The device is not one of the three affected models listed
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Check the firmware versionAccess the router web interface (typically at 192.168.0.1 or 192.168.1.1) and navigate to the System Tools > Firmware Upgrade or Status page to view the installed firmware version. For TL-WR841N, compare the version date/build number against 160325Affected if The firmware version is 160325 or earlier for TL-WR841N, or the device is an unpatched TL-WR842ND v2 or TL-WR494N v3
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Verify the web management interface is accessibleAttempt to reach the router web interface over HTTP/HTTPS from the network. Confirm the URL /userRpm/WlanNetworkRpm.htm is accessibleAffected if The web interface is exposed and the specific vulnerable endpoint responds to requests
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Confirm remote access is enabledCheck the router's Access Management or Remote Management settings to determine if HTTP/HTTPS management access is allowed from WAN (remote) IPsAffected if Remote web management is enabled, allowing unauthenticated attackers to reach the vulnerable endpoint over the internet
A user is affected if they operate a TL-WR841N (firmware <=160325), TL-WR842ND v2, or TL-WR494N v3 device with the web interface remotely accessible, enabling unauthenticated attackers to trigger the buffer overflow via the /userRpm/WlanNetworkRpm.htm 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 dataThese are end-of-life devices with no vendor support or patches available. Organizations should immediately disable remote web management interfaces, implement network segmentation to isolate affected devices behind firewalls, and plan for replacement with supported hardware.
- Consultation8.0 h
- Implementation16.0 h
- Testing8.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-53711 — 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-2025-53711 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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