What’s Vulnerable › Vulnerabilities

CVE-2021-28672

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-03-29 · updated 2026-06-17
• Weakness: CWE-120

Description

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.

Affected products

• Xerox Phaser 6510 Firmware: before 64.59.11; before 64.65.51 — fixed in 64.59.11, 64.65.51
• Xerox Versalink B400 Firmware: before 37.59.01; before 37.65.51 — fixed in 37.59.01, 37.65.51
• Xerox Versalink B405 Firmware: before 38.59.01; before 38.65.51 — fixed in 38.59.01, 38.65.51
• Xerox Versalink B600 Firmware: before 32.59.01; before 32.65.51 — fixed in 32.59.01, 32.65.51
• Xerox Versalink B605 Firmware: before 33.59.01; before 33.65.51 — fixed in 33.59.01, 33.65.51
• Xerox Versalink B610 Firmware: before 32.59.01; before 32.65.51 — fixed in 32.59.01, 32.65.51
• Xerox Versalink B615 Firmware: before 33.59.01; before 33.65.51 — fixed in 33.59.01, 33.65.51
• Xerox Versalink B7025 Firmware: before 58.59.11; before 58.65.51 — fixed in 58.59.11, 58.65.51
• Xerox Versalink B7030 Firmware: before 58.59.11; before 58.65.51 — fixed in 58.59.11, 58.65.51
• Xerox Versalink B7035 Firmware: before 58.59.11; before 58.65.51 — fixed in 58.59.11, 58.65.51
• Xerox Versalink C400 Firmware: before 67.59.01; before 67.65.51 — fixed in 67.59.01, 67.65.51
• Xerox Versalink C405 Firmware: before 68.59.01; before 68.65.51 — fixed in 68.59.01, 68.65.51
• Xerox Versalink C500 Firmware: before 61.59.01; before 61.65.51 — fixed in 61.59.01, 61.65.51
• Xerox Versalink C505 Firmware: before 62.59.01; before 62.65.51 — fixed in 62.59.01, 62.65.51
• Xerox Versalink C600 Firmware: before 61.59.01; before 61.65.51 — fixed in 61.59.01, 61.65.51
• Xerox Versalink C605 Firmware: before 62.59.01; before 62.65.51 — fixed in 62.59.01, 62.65.51
• Xerox Versalink C7000 Firmware: before 56.59.01; before 56.65.51 — fixed in 56.59.01, 56.65.51
• Xerox Versalink C7020 Firmware: before 57.59.01; before 57.65.51 — fixed in 57.59.01, 57.65.51
• Xerox Versalink C7025 Firmware: before 57.59.01; before 57.65.51 — fixed in 57.59.01, 57.65.51
• Xerox Versalink C7030 Firmware: before 57.59.01; before 57.65.51 — fixed in 57.59.01, 57.65.51
• Xerox Versalink C8000 Firmware: before 70.59.01; before 70.65.51 — fixed in 70.59.01, 70.65.51
• Xerox Versalink C8000W Firmware: before 72.65.51 — fixed in 72.65.51
• Xerox Versalink C9000 Firmware: before 70.59.01; before 70.65.51 — fixed in 70.59.01, 70.65.51
• Xerox Workcentre 6515 Firmware: before 65.59.11; before 65.65.51 — fixed in 65.59.11, 65.65.51

How to fix

Upgrade to a fixed version: Xerox Phaser 6510 Firmware 64.59.11, 64.65.51; Xerox Versalink B400 Firmware 37.59.01, 37.65.51; Xerox Versalink B405 Firmware 38.59.01, 38.65.51; Xerox Versalink B600 Firmware 32.59.01, 32.65.51; Xerox Versalink B605 Firmware 33.59.01, 33.65.51; Xerox Versalink B610 Firmware 32.59.01, 32.65.51; Xerox Versalink B615 Firmware 33.59.01, 33.65.51; Xerox Versalink B7025 Firmware 58.59.11, 58.65.51; Xerox Versalink B7030 Firmware 58.59.11, 58.65.51; Xerox Versalink B7035 Firmware 58.59.11, 58.65.51; Xerox Versalink C400 Firmware 67.59.01, 67.65.51; Xerox Versalink C405 Firmware 68.59.01, 68.65.51. Check the vendor advisory for mitigations.

References

• https://securitydocs.business.xerox.com/wp-content/uploads/2021/03/cert_Security_Mini_Bulletin_XRX21D_for_PH6510_WC6515_VersaLink-1.pdf
• https://securitydocs.business.xerox.com/wp-content/uploads/2021/03/cert_Security_Mini_Bulletin_XRX21D_for_PH6510_WC6515_VersaLink-1.pdf

Get alerted when CVE-2021-28672 or the next vulnerability affects your stack