CVE-2015-2871
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 · uneditedChiyu BF-660C fingerprint access-control devices allow remote attackers to bypass authentication and (1) read or (2) modify communication configuration settings via a request to net.htm, a different vulnerability than CVE-2015-5618.
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 Chiyu BF-660C fingerprint access-control device contains an authentication bypass vulnerability in its web interface. Remote attackers can exploit this by sending direct requests to the net.htm page without proper credentials, allowing unauthorized read and write access to communication configuration settings.
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 dataall 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
- Partial
- Integrity
- Partial
- Availability
- Partial
AV:N/AC:L/Au:N/C:P/I:P/A:P
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, web interface login page, or use network discovery to confirm the device is a Chiyu BF-660C fingerprint access-control deviceAffected if The device is a Chiyu BF-660C and all versions are vulnerable
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Verify web interface is network-accessibleAttempt to access the device web interface over HTTP/HTTPS from an unauthorized host on the networkAffected if The web interface responds to requests from a host that is not explicitly authorized for management
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Test unauthenticated access to net.htmSend a direct HTTP request to the net.htm page (e.g., GET /net.htm) without providing any authentication credentialsAffected if The page loads and displays communication configuration settings without requiring a login session
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Confirm configuration access without credentialsAttempt to read or modify communication settings through the net.htm interface without authenticatingAffected if Changes can be saved or configuration data can be viewed without any login prompt appearing
If the Chiyu BF-660C web interface is network-accessible and net.htm loads without requiring authentication, the environment is affected by CVE-2015-2871.
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 updates if available; otherwise implement network segmentation to isolate the access-control device from untrusted networks and deploy firewall rules to restrict web interface access to authorized management hosts.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2015-2871 — 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-2015-2871 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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