Securing Printers for PCI Compliance: Key Considerations Unveiled

Printers play a significant role in the world of PCI compliance, especially in light of recent vulnerabilities like CVE-2025-12681 affecting certain Canon print drivers. This flaw underscores the critical nature of securing printers and multifunction machines (MFMs) to adhere to the Payment Card Industry Data Security Standard (PCI DSS).

Historically, printers and scanners have been part of PCI compliance assessments as they can handle cardholder data. The PCI DSS version 4.0.1 clearly outlines the inclusion of these devices within the scope of compliance assessments, whether as a component of the cardholder data environment (CDE) or as a connected-to device based on function and connectivity.

Modern printers, scanners, and MFMs are equipped with various network protocols beyond the standard TCP/IP, such as Bluetooth, NFC, and IPP. Some devices even support outdated protocols like LPD and AppleTalk. Additionally, certain machines feature wireless access points for direct printing and internal web servers for administration, raising security concerns.

Entities striving for PCI compliance must consider several key areas when evaluating printers and MFMs. These include assessing the necessity and protection of network protocols, securing web-based administration, controlling inbound traffic, safeguarding wireless access points, managing vendor default accounts, and protecting data storage and transmission.

PCI DSS requirements further delve into securing devices through configuration standards, hardening mechanisms, disabling unnecessary communication protocols, managing vendor default accounts, protecting stored data, encrypting transmissions, and controlling access to sensitive data. Compliance efforts must extend to addressing email usage and wireless network security in the context of sending scanned documents.

Given the complexities and risks associated with printers and MFMs in PCI compliance, organizations are advised to engage Qualified Security Assessors (QSAs) to navigate these challenges effectively. Working with PCI-certified professionals like those at Forvis Mazars can enhance security posture, ensure compliance, and mitigate potential vulnerabilities in cardholder data processing systems.

In conclusion, understanding the nuances of PCI compliance concerning printers is crucial for organizations handling sensitive payment data. By addressing the intricacies of printer security, businesses can fortify their defenses against evolving threats and maintain a robust compliance framework in alignment with industry standards.