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Workcentre 3655i FirmwareOperating system · Xerox

CVE-2018-20771

CRITICAL · 9.8 CVSS v3.0 Published 2019-02-10
Fix available
A fix is available. Upgrade to 073.060.048.15000 / 073.190.048.15000 or later.
See remediation →
100/100
Remediation priority · Urgent
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
An issue was discovered on Xerox WorkCentre 3655, 3655i, 58XX, 58XXi, 59XX, 59XXi, 6655, 6655i, 72XX, 72XXi, 78XX, 78XXi, 7970, 7970i, EC7836, and EC7856 devices before R18-05 073.xxx.0487.15000. There is unauthenticated Remote Command Execution.

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 confidence

Unauthenticated Remote Command Execution vulnerability in Xerox WorkCentre 3655, 3655i, 58XX, 58XXi, 59XX, 59XXi, 6655, 6655i, 72XX, 72XXi, 78XX, 78XXi, 7970, 7970i, EC7836, and EC7856 devices running firmware versions prior to R18-05 073.xxx.0487.15000. This allows remote attackers to execute arbitrary commands without authentication.

MitigationUpdate affected Xerox WorkCentre devices to firmware version R18-05 073.xxx.0487.15000 or later to remediate the unauthenticated RCE vulnerability.

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
Workcentre 3655i FirmwareOperating system
Affected:< 073.060.048.15000
Workcentre 3655 FirmwareOperating system
Affected:< 073.060.048.15000
Workcentre 5890i FirmwareOperating system
Affected:< 073.190.048.15000
Workcentre 5865i FirmwareOperating system
Affected:< 073.190.048.15000
Workcentre 5875i FirmwareOperating system
Affected:< 073.190.048.15000
Workcentre 5845 FirmwareOperating system
Affected:< 073.190.048.15000
Workcentre 5865 FirmwareOperating system
Affected:< 073.190.048.15000
Workcentre 5875 FirmwareOperating system
Affected:< 073.190.048.15000

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
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 checks

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

  1. Identify the Xerox WorkCentre device model
    Access the device web interface or check the physical label to confirm the exact model number (e.g., WorkCentre 3655, 5865i, 5875, etc.)
    Affected if The model matches one of: 3655, 3655i, 5845, 5865, 5865i, 5875, 5875i, 5890i
  2. Retrieve the current firmware version
    Log into the device web interface (if accessible) and navigate to the Properties or About page, or print a configuration page from the device control panel to view the firmware version
    Affected if The displayed firmware version cannot be read or the device is unreachable
  3. Compare firmware version against affected ranges
    Match the installed firmware version to the affected thresholds: for 3655/3655i look for < 073.060.048.15000; for 5845, 5865, 5865i, 5875, 5875i, 5890i look for < 073.190.048.15000
    Affected if The installed firmware version is lower than the affected threshold for that specific model
  4. Verify network exposure of the device
    Confirm the device IP address is reachable from network scans or check if the device web interface is accessible externally
    Affected if The device is directly accessible from the internet or untrusted networks without firewall protection

The device is affected if it is a WorkCentre 3655/3655i with firmware below 073.060.048.15000, or a WorkCentre 5845/5865/5865i/5875/5875i/5890i with firmware below 073.190.048.15000, and is network accessible.

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.

dbcve · scoped
Upgrade available Upgrade to 073.060.048.15000 / 073.190.048.15000 or later
Fixed in 073.060.048.15000073.190.048.15000
Interim mitigation

Update affected Xerox WorkCentre devices to firmware version R18-05 073.xxx.0487.15000 or later to remediate the unauthenticated RCE vulnerability.

Recommended fix High confidence

Firmware version 073.060.048.15000 or later for WorkCentre 3655/3655i; Firmware version 073.190.048.15000 or later for WorkCentre 58XX series (as part of R18-05 release)

  1. Access the device web interface or admin console to check the current firmware version
  2. Navigate to the firmware update or system maintenance section
  3. Download the fixed firmware version (073.060.048.15000 or later for 3655/3655i models; 073.190.048.15000 or later for 58XX models) from Xerox official support portal
  4. Upload the firmware update file to the device
  5. Allow the firmware update process to complete - do not power off the device during this process
  6. After reboot, verify the firmware version has been updated to the fixed release
  7. Confirm the device is functioning normally after the update
Caveat Firmware updates may temporarily disrupt device availability; ensure backup of critical settings and schedule update during maintenance window

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Workcentre 3655i Firmware Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing4.0 h
  • Review / QA2.0 h
18.0 hours of engineering $3,200
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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-2018-20771 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