CVE-2021-20679: Fujixerox Apeosport-Vii 4021 Firmware

High severity, CVSS 7.5. EPSS: 1.5% chance of exploitation in the next 30 days.

Fuji Xerox multifunction devices and printers (DocuCentre-VII C7773/C6673/C5573/C4473/C3373/C3372/C2273, DocuCentre-VII C7788/C6688/C5588, ApeosPort-VII C7773/C6673/C5573/C4473/C3373/C3372 C2273, ApeosPort-VII C7788/C6688/C5588, ApeosPort C7070/C6570/C5570/C4570/C3570/C3070/C7070G/C6570G/C5570G/C4570G/C3570G/C3070G, ApeosPort-VII C4421/C3321, ApeosPort C3060/C2560/C2060/C3060G/C2560G/C2060G, ApeosPort-VII CP4421, ApeosPort Print C5570, ApeosPort 5570/4570/5570G/4570G, ApeosPort 3560/3060/2560/3560G/3060G/2560G, ApeosPort-VII 5021/ 4021, ApeosPort-VII P5021, DocuPrint CP 555 d/505 d, DocuPrint P505 d, PrimeLink C9065/C9070, DocuPrint CP475AP, and DocuPrint P475AP) allow an attacker to cause a denial of service (DoS) condition and abnormal end (ABEND) of the affected products via sending a specially crafted command.

Affected products

• Fujixerox Apeosport-Vii 4021 Firmware: affected versions not specified
• Fujixerox Apeosport-Vii 5021 Firmware: affected versions not specified
• Fujixerox Apeosport-Vii 5022 Firmware: affected versions not specified
• Fujixerox Apeosport-Vii c2273 Firmware: affected versions not specified
• Fujixerox Apeosport-Vii c3321 Firmware: affected versions not specified
• Fujixerox Apeosport-Vii c3322 Firmware: affected versions not specified
• Fujixerox Apeosport-Vii c3372 Firmware: affected versions not specified
• Fujixerox Apeosport-Vii c3373 Firmware: affected versions not specified
• Fujixerox Apeosport-Vii c4421 Firmware: affected versions not specified
• Fujixerox Apeosport-Vii c4422 Firmware: affected versions not specified
• Fujixerox Apeosport-Vii c4473 Firmware: affected versions not specified
• Fujixerox Apeosport-Vii c5573 Firmware: affected versions not specified
• Fujixerox Apeosport-Vii c5588 Firmware: affected versions not specified
• Fujixerox Apeosport-Vii c6673 Firmware: affected versions not specified
• Fujixerox Apeosport-Vii c6688 Firmware: affected versions not specified
• Fujixerox Apeosport-Vii c7773 Firmware: affected versions not specified
• Fujixerox Apeosport-Vii c7788 Firmware: affected versions not specified
• Fujixerox Apeosport-Vii CP3322 Firmware: affected versions not specified
• Fujixerox Apeosport-Vii CP4421 Firmware: affected versions not specified
• Fujixerox Apeosport-Vii CP4422 Firmware: affected versions not specified
• Fujixerox Apeosport-Vii p4022 Firmware: affected versions not specified
• Fujixerox Apeosport-Vii p5021 Firmware: affected versions not specified
• Fujixerox Apeosport 1860 Firmware: affected versions not specified
• Fujixerox Apeosport 2560 Firmware: affected versions not specified
• Fujixerox Apeosport 2560g Firmware: affected versions not specified
• and 50 more

Published 2021-03-25. Last modified 2026-06-17.