CVE-2016-2311
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 · uneditedBlack Box AlertWerks ServSensor with firmware before SP473, AlertWerks ServSensor Junior with firmware before SP473, AlertWerks ServSensor Junior with PoE with firmware before SP473, and AlertWerks ServSensor Contact with firmware before SP473 allow remote authenticated users to discover administrator and user passwords via unspecified vectors.
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 confidenceThe AlertWerks ServSensor family (including Junior, Junior with PoE, and Contact variants) with firmware before SP473 contains a vulnerability allowing authenticated remote users to discover administrator and user passwords. This suggests the password data is being exposed through an API, interface, or stored in an insecure manner accessible to authenticated users.
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 versionsall versionsall 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
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
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 AlertWerks ServSensor device on the networkLocate devices by scanning for HTTP services and checking the web interface banner or login page for 'AlertWerks', 'ServSensor', or related branding. Note the exact model variant (Junior, Junior with PoE, or Contact).Affected if The device is any model in the AlertWerks ServSensor family (Junior, Junior with PoE, or Contact variants).
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Determine the installed firmware versionAccess the device web interface and navigate to the firmware or status page. Look for a version number field (often labeled 'Firmware Version', 'Version', or 'Build'). Compare this version to SP473.Affected if The firmware version is present but shows a version number lower than SP473, or displays a version that does not indicate SP473 or later.
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Confirm the device web interface is network accessibleAttempt to reach the device HTTP interface from a remote location or check if the device is exposed to network segments beyond the local administrative network.Affected if The device HTTP interface responds to requests from network locations where untrusted users could obtain authentication.
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Verify if password-related API endpoints are exposedLog into the device with any valid user account and examine the web interface or any API endpoints for pages or responses containing 'password', 'user', or credential-related fields. Look for areas where user accounts or passwords are displayed or transmitted.Affected if After authentication, any page or API response displays plaintext passwords, password hashes, or credential data for administrator or user accounts.
A user is affected if the device is an AlertWerks ServSensor (any Junior, Junior with PoE, or Contact variant) running firmware version earlier than SP473, and the web interface is accessible to authenticated remote users who can view exposed password data.
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 dataUpdate all affected AlertWerks ServSensor devices to firmware SP473 or later to remediate the password disclosure vulnerability. If firmware update is not possible, restrict network access to these devices and monitor for unauthorized access.
- Consultation2.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,560.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2016-2311 — 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-2016-2311 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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
- No spam, self-promotion, credentials, or personal data