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Industrial Ethernet 2000 Series FirmwareHardware / appliance · Cisco

CVE-2017-3812

MEDIUM · 6.8 CVSS v3.0 Published 2017-02-03
Fix available
A fix is available. Upgrade to after 15.2 or later.
See remediation →
77/100
Remediation priority · High
Remotely reachable No privileges Zero-click

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 · unedited
A vulnerability in the implementation of Common Industrial Protocol (CIP) functionality in Cisco Industrial Ethernet 2000 Series Switches could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition due to a system memory leak. More Information: CSCvc54788. Known Affected Releases: 15.2(5.4.32i)E2. Known Fixed Releases: 15.2(5.4.62i)E2.

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 confidence

A memory leak vulnerability exists in the Common Industrial Protocol (CIP) implementation on Cisco Industrial Ethernet 2000 Series Switches. An unauthenticated, remote attacker can exploit this to cause a denial of service condition by exhausting system memory.

MitigationUpgrade Cisco IE 2000 switches to firmware version 15.2(5.4.62i)E2 or later. As a compensating control, restrict network access to CIP-enabled interfaces to prevent unauthorized remote exploitation.

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
Industrial Ethernet 2000 Series FirmwareHardware / appliance
Affected:<= 15.2\(5.4.32i\)e2

CVSS 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
High
Privileges
None
User interaction
None
Scope
Changed
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/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 checks

Work through these to decide whether this CVE applies to you.

  1. Confirm device model
    Log into the switch CLI and run 'show version' or check the physical device label to verify the model is Cisco Industrial Ethernet 2000 Series Switch
    Affected if Device is not a Cisco IE 2000 Series Switch
  2. Check firmware version
    Run 'show version' in the switch CLI and locate the firmware version string (typically displayed as something like 15.2(x.xxxi)Ex)
    Affected if Firmware version is 15.2(5.4.32i)e2 or any version prior to 15.2(5.4.62i)E2
  3. Verify CIP protocol status
    Run 'show running-config' or 'show cip status' (if available) to check if Common Industrial Protocol is enabled on any interface
    Affected if CIP is enabled on one or more interfaces

The environment is affected if the device is a Cisco IE 2000 Series Switch running firmware version 15.2(5.4.32i)e2 or earlier with CIP protocol enabled.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 data
Upgrade available Upgrade to a release after 15.2
Interim mitigation

Upgrade Cisco IE 2000 switches to firmware version 15.2(5.4.62i)E2 or later. As a compensating control, restrict network access to CIP-enabled interfaces to prevent unauthorized remote exploitation.

Fix this in Industrial Ethernet 2000 Series Firmware Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing3.0 h
  • Review / QA2.0 h
11.0 hours of engineering $1,930
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An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,088.

Scan for this in your stack

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dbcve dependency scanner

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2017-3812 in production — separate from our analysis above.

No notes yet

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What this is

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.

What belongs here
  • 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