Ricoh New Zealand Security Advisory: Privilege Escalation Vulnerability in Printer and LAN-FAX Drivers

Executive summary

This is a high-severity local privilege escalation vulnerability in Ricoh and Konica Minolta printer drivers. If an attacker can log into a device that has one of the vulnerable drivers installed, they may be able to gain full SYSTEM-level access and completely compromise the machine. Updating the affected printer drivers as soon as possible is recommended.

What is CVE-2026-50100?

A security flaw in some Ricoh and Konica Minolta printer drivers allows a user with access to a Windows computer to gain administrator/System-level privileges.

What could happen?

An attacker who can already log into a computer could:

• Trick the printer driver into loading a malicious file.
• Bypass the driver security checks.
• Run code with SYSTEM privileges (the highest level of access in Windows).

Potentially:

• Install malware
• Modify system files
• Create persistent backdoors
• Take control of the affected machine

Who is affected?

Any computer using the vulnerable Ricoh printer drivers.

How serious is it?

• CVSS Score: 8.5/10 (High)
• Requires login access: Yes
• Can be exploited remotely: Not directly, based on the information provided.
• Impact: High, because it can turn a normal user into a full administrator.

Simple risk assessment

Find out more

To find out more, please visit our global security page here.