CVE-2014-5246
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 · uneditedThe Shenzhen Tenda Technology Tenda A5s router with firmware 3.02.05_CN allows remote attackers to bypass authentication and gain administrator access by setting the admin:language cookie to zh-cn.
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 confidenceThe Tenda A5s router with firmware 3.02.05_CN contains an authentication bypass vulnerability in its web management interface. Attackers can gain full administrator privileges by simply setting the admin:language cookie to the value 'zh-cn', bypassing all credential validation.
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= 3.02.05_cnall versionsCVSS 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
- Authentication
- None
- Confidentiality
- Complete
- Integrity
- Complete
- Availability
- Complete
AV:N/AC:L/Au:N/C:C/I:C/A:C
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 Tenda A5s router in your networkLog into your router's web interface and check the device model/model number, or check your network device inventory for 'Tenda A5s'Affected if The device is a Tenda A5s router
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Check installed firmware versionAccess the router's web management interface, look for a 'System Status', 'Firmware Version', or 'About' page. The version is typically displayed as something like 3.02.05_CNAffected if The firmware version is 3.02.05_CN or any version (the advisory states all versions are affected)
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Verify web management interface is enabledIn the router's web interface, check 'System Settings' or 'Remote Management' to see if the HTTP/HTTPS management interface is turned onAffected if The web management interface is enabled and accessible
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Check network exposure of management interfaceAttempt to access the router's IP address from an external network, or review firewall rules to determine if TCP ports 80/443 are open to the router from untrusted networksAffected if The router's web interface is accessible from untrusted networks (not just trusted internal networks)
You are affected if you have a Tenda A5s router with the web management interface enabled and accessible, regardless of firmware version since the advisory indicates all versions are vulnerable to the admin:language cookie bypass.
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 the vendor-provided firmware patch when available. In the interim, restrict access to the router's web management interface to trusted internal networks only, or disable remote administration entirely.
- Consultation2.0 h
- Implementation3.0 h
- Testing2.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2014-5246 — 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-2014-5246 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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