JVN#65118274    
Open redirect vulnerability in multiple laser printers and MFPs which implement Ricoh Web Image Monitor

Multiple laser printers and MFPs (multifunction printers) which implement Ricoh Web Image Monitor contain an open redirect vulnerability.

• Specific products and versions which implement Web Image Monitor

As for the details of affected product names and versions, refer to the information provided by the developer.

Web Image Monitor provided by Ricoh Company, Ltd. is a web server that is included in and runs on laser printers and MFPs (multifunction printers).
Web Image Monitor contains the vulnerability listed below.

• Open redirect (CWE-601)
  • CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N Base Score 5.1
  • CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N Base Score 4.7
  • CVE-2026-41226

When accessing a specially crafted URL, the user may be redirected to an arbitrary website. As a result, the user may become a victim of a phishing attack.

Update Web Image Monitor
Update Web Image Monitor to the latest version according to the information provided by the developer.

Vendor	Status	Last Update	Vendor Notes
Konica Minolta Japan, Inc.	Vulnerable	2026/08/31	Konica Minolta Japan, Inc. website

Vendor	Link
Ricoh Company, Ltd.	Specific Ricoh MFPs and Printers: Open Redirect Vulnerability in Web Image Monitor

Tony Kirkland of Sixgen Inc reported this vulnerability to Ricoh Company, Ltd. directly and coordinated. After the coordination, Ricoh Company, Ltd. reported this case to IPA under Information Security Early Warning Partnership, and JPCERT/CC coordinated with Ricoh Company, Ltd. for JVN publication.