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Workcentre 3655i FirmwareOperating system · Xerox

CVE-2018-20768

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 Patch available

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. An attacker can execute PHP code by leveraging a writable file.

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
How this class of weakness works · CWE-94

The application evaluates attacker-influenced input as code, handing them a way to run logic inside the process. Depending on the runtime this can escalate directly to remote code execution. Remediation means removing dynamic evaluation of untrusted input and replacing it with safe, data-driven alternatives.

General guidance for the code injection class — the official description and references above are authoritative for this specific CVE. Want a bespoke review and a reviewed fix? Ask our team →

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

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
Vendor patch securitydocs.business.xerox.com →
Recommended fix High confidence

R18-05 firmware release (073.xxx.0487.15000 or later)

  1. 1. Identify the exact WorkCentre model number from the device control panel or configuration page
  2. 2. Download the latest firmware for your specific model from the Xerox support website (support.xerox.com)
  3. 3. Ensure the device is connected to a stable power source and network during the update
  4. 4. Access the device web interface (Embedded Web Server) and navigate to the Support > Install section
  5. 5. Select the downloaded firmware file (.dlm or .hdr format) and initiate the upgrade
  6. 6. Wait for the firmware upload to complete - do not power off the device during this process
  7. 7. The device will automatically reboot after firmware installation completes
  8. 8. Verify the new firmware version by checking About > Device Information in the web interface
Caveat Firmware upgrades may temporarily interrupt device availability; ensure print jobs are paused and administrative access is maintained throughout the process

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

We can perform the upgrade in your staging environment and verify nothing breaks — typical engagement from $3,550. Get the upgrade done

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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-2018-20768 in production — separate from our analysis above.

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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
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