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Phaser 6510 FirmwareOperating system · Xerox

CVE-2021-28671

CRITICAL · 9.8 CVSS v3.1 Published 2021-03-29
Fix available
A fix is available. Upgrade to 32.59.01 / 32.65.51 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
Xerox Phaser 6510 before 64.65.51 and 64.59.11 (Bridge), WorkCentre 6515 before 65.65.51 and 65.59.11 (Bridge), VersaLink B400 before 37.65.51 and 37.59.01 (Bridge), B405 before 38.65.51 and 38.59.01 (Bridge), B600/B610 before 32.65.51 and 32.59.01 (Bridge), B605/B615 before 33.65.51 and 33.59.01 (Bridge), B7025/30/35 before 58.65.51 and 58.59.11 (Bridge), C400 before 67.65.51 and 67.59.01 (Bridge), C405 before 68.65.51 and 68.59.01 (Bridge), C500/C600 before 61.65.51 and 61.59.01 (Bridge), C505/C605 before 62.65.51 and 62.59.01 (Bridge), C7000 before 56.65.51 and 56.59.01 (Bridge), C7020/25/30 before 57.65.51 and 57.59.01 (Bridge), C8000/C9000 before 70.65.51 and 70.59.01 (Bridge), C8000W before 72.65.51 have a remote Command Execution vulnerability in the Web User Interface that allows remote attackers with "a weaponized clone file" to execute arbitrary commands.

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

Multiple Xerox printer models (Phaser 6510, WorkCentre 6515, VersaLink B400/B405/B600/B610/B605/B615/B7025/30/35, C400/C405/C500/C600/C505/C605/C7000/C7020/25/30, C8000/C9000/C8000W) contain a pre-authentication remote command execution vulnerability in their Web User Interface. Attackers can achieve RCE by uploading a 'weaponized clone file' to the web interface, likely exploiting the device configuration import functionality.

MitigationUpdate firmware to the specified fixed versions (e.g., Phaser 6510 to 64.65.51 or later) or contact Xerox for the appropriate patch. If patching is not immediately possible, restrict network access to the printer web UI.

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
Phaser 6510 FirmwareOperating system
Affected:< 64.59.11< 64.65.51
Workcentre 6515 FirmwareOperating system
Affected:< 65.59.11< 65.65.51
Versalink B400 FirmwareOperating system
Affected:< 37.59.01< 37.65.51
Versalink B405 FirmwareOperating system
Affected:< 38.59.01< 38.65.51
Versalink B600 FirmwareOperating system
Affected:< 32.59.01< 32.65.51
Versalink B610 FirmwareOperating system
Affected:< 32.59.01< 32.65.51
Versalink B605 FirmwareOperating system
Affected:< 33.59.01< 33.65.51
Versalink B615 FirmwareOperating system
Affected:< 33.59.01< 33.65.51

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:3.1/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 printer model
    Check the device label, web UI login page, or printed configuration report to confirm the exact model number (e.g., Phaser 6510, WorkCentre 6515, VersaLink B400)
    Affected if The model is one of the affected models listed in the CVE: Phaser 6510, WorkCentre 6515, VersaLink B400/B405/B600/B610/B605/B615 or related C400/C405/C500/C600/C505/C605/C7000/C7020/25/30/C8000/C9000/C8000W models
  2. Determine the installed firmware version
    Access the printer web interface and navigate to Properties > General > About or check the printed configuration page for the firmware version string (e.g., 64.59.05, 37.58.02)
    Affected if The firmware version falls below the fixed thresholds: Phaser 6510 < 64.59.11 or < 64.65.51; WorkCentre 6515 < 65.59.11 or < 65.65.51; VersaLink B400 < 37.59.01 or < 37.65.51; VersaLink B405 < 38.59.01 or < 38.65.51; VersaLink B600/B610 < 32.59.01 or < 32.65.51; VersaLink B605/B615 < 33.59.01 or < 3
  3. Verify the Web UI is accessible
    Attempt to reach the printer web interface by entering the printer IP address in a browser (http://<printer_ip>). Confirm the login page loads.
    Affected if The Web UI is reachable over the network (the vulnerability is exploitable through the web interface configuration import feature)
  4. Confirm configuration import feature availability
    In the web interface, look for sections named 'Configuration Import/Export', 'Clone File', 'Backup/Restore', or 'Import Configuration' under Properties, General Settings, or Maintenance menus.
    Affected if The configuration import functionality is present and accessible (this is the attack vector for the RCE vulnerability)

The environment is affected if the printer model matches one of the affected Xerox models AND the installed firmware version is below the fixed version thresholds AND the web interface is network-accessible with the configuration import feature available.

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 32.59.01 / 32.65.51 / 33.59.01 or later
Fixed in 32.59.0132.65.5133.59.01
Interim mitigation

Update firmware to the specified fixed versions (e.g., Phaser 6510 to 64.65.51 or later) or contact Xerox for the appropriate patch. If patching is not immediately possible, restrict network access to the printer web UI.

Recommended fix High confidence

Firmware 64.65.51/64.59.11 (Phaser 6510), 65.65.51/65.59.11 (WorkCentre 6515), 37.65.51/37.59.01 (Versalink B400), 38.65.51/38.59.01 (Versalink B405), 32.65.51/32.59.01 (Versalink B600/B610), 33.65.51/33.59.01 (Versalink B605/B615) - depending on model

  1. Identify the exact Xerox device model (e.g., Phaser 6510, WorkCentre 6515, Versalink B400, etc.)
  2. Access the device web interface or control panel to determine the current firmware version
  3. Navigate to Xerox support website (securitydocs.business.xerox.com or xerox.com) and locate the firmware download section for your specific model
  4. Download the appropriate firmware version: For Phaser 6510 use 64.65.51 or higher; for WorkCentre 6515 use 65.65.51 or higher; for Versalink B400 use 37.65.51 or higher; for Versalink B405 use 38.65.51 or higher; for Versalink B600/B610 use 32.65.51 or higher; for Versalink B605/B615 use 33.65.51 or higher
  5. Follow Xerox firmware upgrade instructions, typically via the web UI (System > Firmware Update) or USB firmware file upload
  6. After upgrade, verify the firmware version has been successfully updated and confirm the new version is at or above the fixed release numbers
  7. Test that the device web interface functions normally after the update
Caveat Firmware updates typically do not introduce breaking changes but should be tested in a non-production environment first; review Xerox release notes for any configuration or compatibility notes

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

Fix this in Phaser 6510 Firmware Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing2.0 h
  • Review / QA1.0 h
9.0 hours of engineering $1,600
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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-2021-28671 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
  • No spam, self-promotion, credentials, or personal data