CVE-2016-4501
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 · uneditedEnvironmental Systems Corporation (ESC) 8832 Data Controller 3.02 and earlier mishandles sessions, which allows remote attackers to bypass authentication and make arbitrary configuration changes 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 ESC 8832 Data Controller version 3.02 and earlier contains a session management flaw that allows remote attackers to bypass authentication mechanisms entirely. This enables unauthorized users to make arbitrary configuration changes to the device, which is critical given its role as a data controller in industrial environments.
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<= 3.02CVSS 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
- None
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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 ESC 8832 Data Controller on the networkScan network for the device by checking HTTP/HTTPS banners or service ports commonly used by industrial controllers. Look for responses containing 'Esc 8832', 'Envirosys', or 'Data Controller' in headers or login pages.Affected if The device is detected and responds with Envirosys ESC 8832 branding or identification strings.
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Access the device firmware versionLog into the device administrative interface (web console or serial/SSH management) and navigate to System Information, About, or Firmware Status pages. Record the displayed firmware version number.Affected if The displayed firmware version is 3.02 or earlier.
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Verify the session management vulnerabilityAttempt to access protected configuration pages or administrative functions without providing credentials. Check if the device allows unauthenticated access to sensitive areas that should require login.Affected if The device grants access to administrative or configuration functions without valid session credentials.
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Check device network exposureReview firewall rules, ACLs, and network segmentation to determine if the device management interface is accessible from untrusted networks or the internet.Affected if The device management interface is directly accessible from untrusted networks without filtering.
A user is affected if the Envirosys ESC 8832 Data Controller firmware is version 3.02 or earlier and the device allows unauthenticated access to configuration functions or is exposed to untrusted networks.
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 dataSince this is a legacy industrial controller device, verify if vendor firmware updates exist; if not available, implement compensating controls including network segmentation, strict access control lists, and monitoring for unauthorized configuration changes.
- Consultation8.0 h
- Implementation12.0 h
- Testing6.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $8,608.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2016-4501 — 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-2016-4501 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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