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Phaser 6510 FirmwareOperating system · Xerox

CVE-2021-28672

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 allows remote attackers to execute arbitrary code through a buffer overflow in Web page parameter handling.

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

A buffer overflow vulnerability in the web interface of Xerox Phaser, WorkCentre, and VersaLink printer devices allows remote attackers to execute arbitrary code by sending specially crafted parameters to the web page handling functions. This affects multiple models across different firmware version branches.

MitigationApply the vendor-provided firmware updates to all affected devices. For devices that cannot be updated immediately, consider network segmentation to limit exposure to untrusted networks.

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 device model
    Access the printer web interface (http://<device-ip>) or check the physical label on the device to confirm the exact model number (Phaser 6510, WorkCentre 6515, VersaLink B400/B405/B600/B610/B605/B615)
    Affected if The device model is NOT one of these eight models listed in the affected products
  2. Determine the installed firmware version
    Log into the web interface as admin, navigate to Properties or System settings, and locate the Firmware version information. Alternatively, print a configuration page from the device control panel
    Affected if The firmware version cannot be determined or is not visible
  3. Compare firmware version for Phaser 6510
    For Phaser 6510: Check if version is below 64.59.11 or between 64.60.00 and 64.65.50 (below 64.65.51)
    Affected if The installed version is less than 64.59.11 OR is less than 64.65.51 (for branch 64.60.00 through 64.65.50)
  4. Compare firmware version for WorkCentre 6515
    For WorkCentre 6515: Check if version is below 65.59.11 or between 65.60.00 and 65.65.50 (below 65.65.51)
    Affected if The installed version is less than 65.59.11 OR is less than 65.65.51 (for branch 65.60.00 through 65.65.50)
  5. Compare firmware version for VersaLink B400/B405
    For B400: version below 37.59.01 or below 37.65.51. For B405: version below 38.59.01 or below 38.65.51
    Affected if The B400 version is below 37.59.01 or below 37.65.51, OR the B405 version is below 38.59.01 or below 38.65.51
  6. Compare firmware version for VersaLink B600/B610/B605/B615
    For B600/B610: version below 32.59.01 or below 32.65.51. For B605/B615: version below 33.59.01 or below 33.65.51
    Affected if The B600 or B610 version is below 32.59.01 or below 32.65.51, OR the B605 or B615 version is below 33.59.01 or below 33.65.51

The device is affected if it is a Xerox Phaser 6510, WorkCentre 6515, or VersaLink B400/B405/B600/B610/B605/B615 with firmware version below the specified thresholds for its model.

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

Apply the vendor-provided firmware updates to all affected devices. For devices that cannot be updated immediately, consider network segmentation to limit exposure to untrusted networks.

Recommended fix High confidence

Upgrade to firmware version 64.65.51 or 64.59.11 (Phaser 6510); 65.65.51 or 65.59.11 (WorkCentre 6515); 37.65.51 or 37.59.01 (VersaLink B400); 38.65.51 or 38.59.01 (VersaLink B405); 32.65.51 or 32.59.01 (VersaLink B600/B610); 33.65.51 or 33.59.01 (VersaLink B605/B615)

  1. 1. Identify the exact model number and current firmware version of the Xerox device
  2. 2. Access the device's web interface by navigating to its IP address
  3. 3. Log in with administrator credentials
  4. 4. Navigate to the firmware update section (usually under Properties, Maintenance, or System settings)
  5. 5. Download the appropriate firmware version from securitydocs.business.xerox.com for your specific model
  6. 6. Upload and install the fixed firmware version (64.65.51 or 64.59.11 for Phaser 6510; 65.65.51 or 65.59.11 for WorkCentre 6515; 37.65.51 or 37.59.01 for VersaLink B400; 38.65.51 or 38.59.01 for VersaLink B405; 32.65.51 or 32.59.01 for VersaLink B600/B610; 33.65.51 or 33.59.01 for VersaLink B605/B615)
  7. 7. Wait for the firmware upload and installation to complete - do not power off the device
  8. 8. Reboot the device when prompted
Caveat Firmware updates may temporarily interrupt device availability; ensure proper backup of device settings if applicable

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

Fix this in Phaser 6510 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-2021-28672 in production — separate from our analysis above.

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What this is

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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