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2019-08-08 Print

NCC Group Uncovers Dozens of Vulnerabilities in Six Leading Enterprise Printers

Weak links would allow machines and corporate access to be seriously compromised.


Las Vegas, NV (August 8, 2019) -- Researchers at NCC Group, the global cyber security and risk mitigation specialist, have uncovered significant vulnerabilities in six commonly used enterprise printers, highlighting the vast attack surface that can be presented by internet-connected printers. The team tested multiple aspects of six mid-range enterprise printers, including web application and web services, firmware and update capabilities, along with hardware analysis. The printers—manufactured by HP, Ricoh, Xerox, Lexmark, Kyocera and Brother—were tested using basic tools, some dating back 40 years. The research uncovered a wide range of vulnerabilities, including some that emerged almost instantly.

The findings, which will be presented by NCC Group at DEF CON, Hack in the Box and 44Con, range in severity, but the potential impact ranges from denial of service attacks that could cause the printers to crash, backdoors within compromised printers to maintain a hidden presence on the network, and the ability to spy on every print job sent and send print jobs through to unauthorised parties.

All of the vulnerabilities discovered have either been patched, or will be. System administrators are advised to update all vulnerable printers with the latest firmware, and monitor further updates.

“Because printers have been around for so long, they’re not seen as enterprise IoT devices—but they’re embedded in corporate networks and therefore pose a significant risk,” said Matt Lewis, research director at NCC Group. “Building security into the development lifecycle would mitigate most if not all of these vulnerabilities. It’s very important that manufacturers continue to invest in security for all devices, just as corporate IT teams should guard against IoT-related vulnerabilities with even small change: changing default settings, enforcing secure configuration guides and regularly updating firmware.”

A blog post about the research findings is available at


Notes to editors

The research team was made up of Daniel Romero, managing security consultant and research lead, and Mario Rivas, security consultant at NCC Group.

The printers tested are listed below:

• HP Color LaserJet Pro MFP M281fdw
• Ricoh SP C250DN
• Xerox Phaser 3320
• Brother HL-L8360CDW
• Lexmark CX310DN
• Kyocera Ecosys M5526cdw

The technical advisories and CVE details can be found below:

• HP:
• Lexmark:
• Xerox:
• Kyocera:
• Brother:
• Ricoh:

About NCC Group
NCC Group ( is a global expert in cyber security and risk mitigation, working with businesses to protect their brand, value and reputation against the ever-evolving threat landscape.

With the company’s knowledge, experience and global footprint, it is best placed to help businesses identify, assess, mitigate & respond to the risks they face.

NCC Group is passionate about making the Internet safer and revolutionising the way in which organisations think about cyber security.

Headquartered in Manchester, UK, NCC Group has over 35 offices across the world, including key North America offices in New York, San Francisco, Boston, Chicago, Seattle, Atlanta, Austin and Waterloo. It employs more than 1,800 people and is a trusted advisor to 15,000 clients worldwide.

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