CVE-2016-2275
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 web interface on Advantech/B+B SmartWorx VESP211-EU devices with firmware 1.7.2 and VESP211-232 devices with firmware 1.5.1 and 1.7.2 relies on the client to implement access control, which allows remote attackers to perform administrative actions via modified JavaScript code.
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 VESP211 web interface uses JavaScript running on the client side to enforce access control and administrative restrictions. Attackers can intercept and modify this JavaScript in their browser to bypass these controls, allowing unauthenticated remote users to execute administrative actions on the device.
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= 1.7.2= 1.5.1= 1.7.2CVSS 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:3.0/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 if Advantech VESP211 device is on the networkScan network for HTTP/HTTPS services on the VESP211 web interface (typically ports 80/443). Check device documentation or network scans for VESP211 presence.Affected if A VESP211 device with web interface is found accessible on the network.
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Determine the installed firmware versionAccess the VESP211 web interface and navigate to the system information or firmware version page. If unauthenticated access is possible, check the login page or status page for version disclosure.Affected if The displayed firmware version matches 1.7.2 (Vesp211 Eu) or 1.5.1/1.7.2 (Vesp211 232).
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Verify the web interface uses client-side JavaScript for access controlAccess the administrative pages of the VESP211 web interface using a browser. Inspect the page source (View > Page Source) to confirm JavaScript-based restrictions are used for administrative functions.Affected if JavaScript code in the web interface enforces access control or administrative restrictions without server-side validation.
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Confirm lack of server-side authentication enforcementAttempt to access administrative URLs or functions directly without authentication. Intercept and modify JavaScript in browser developer tools to remove client-side checks, then resubmit administrative requests.Affected if Administrative actions execute successfully after bypassing client-side JavaScript controls, indicating missing server-side validation.
A user is affected if they have an Advantech VESP211 device (Eu firmware version 1.7.2 or 232 firmware version 1.5.1/1.7.2) with its web interface accessible, where administrative functions rely on client-side JavaScript that can be bypassed.
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 dataReplace client-side access control with server-side authentication and authorization. The device firmware must validate all administrative requests server-side regardless of any client-side scripts or cookies.
- Consultation8.0 h
- Implementation24.0 h
- Testing12.0 h
- Review / QA8.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2016-2275 — 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-2016-2275 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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