CVE-2025-41393 is a reflected cross-site scripting (XSS) vulnerability affecting multiple laser printers and multifunction printers (MFPs) manufactured by Ricoh Company, Ltd. that implement the Web Image Monitor feature. This vulnerability allows an attacker to inject arbitrary scripts into the web interface of the affected devices. When a user accesses the Web Image Monitor, the malicious script can execute within the user's browser context. This can lead to the theft of session cookies, redirection to malicious websites, or execution of unauthorized actions on behalf of the user. The vulnerability is classified as reflected XSS, meaning the malicious payload is reflected off the web server in an immediate response to a crafted request. The CVSS v3.0 base score is 6.1, indicating a medium severity level. The vector string (AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N) shows that the attack can be performed remotely over the network without privileges, requires low attack complexity, but does require user interaction (the user must access the malicious link). The scope is changed (S:C), meaning the vulnerability affects components beyond the vulnerable component itself, potentially impacting the user's browser environment. Confidentiality and integrity impacts are low, while availability is not affected. No known exploits are currently reported in the wild. Details on affected product versions are to be referenced from vendor advisories. The vulnerability arises from insufficient input validation or output encoding in the Web Image Monitor interface, allowing script injection via user-supplied input parameters.

For European organizations, this vulnerability poses a risk primarily to users who access the Web Image Monitor interface of Ricoh laser printers and MFPs. Successful exploitation could lead to session hijacking, unauthorized actions on the device's web interface, or redirection to phishing or malware sites. This could compromise printer management, leak sensitive print job information, or serve as a foothold for further network intrusion. Organizations with Ricoh devices exposed to internal or external networks, especially those with users who frequently access the Web Image Monitor, are at risk. The impact is heightened in environments where printers are integrated into critical workflows or handle sensitive documents. Additionally, the vulnerability could be leveraged in targeted attacks against European entities that rely on Ricoh hardware, potentially impacting confidentiality and integrity of print-related operations. However, since exploitation requires user interaction and the vulnerability does not affect device availability, the overall operational disruption is limited. Nonetheless, the risk of lateral movement or data leakage through compromised user sessions should not be underestimated.

Organizations should first consult Ricoh's official advisories to identify affected models and apply vendor-provided patches or firmware updates promptly. If patches are not yet available, mitigating controls include restricting access to the Web Image Monitor interface to trusted internal networks only, using network segmentation and firewall rules to block external access. Employing web application firewalls (WAFs) with XSS detection capabilities can help detect and block malicious payloads targeting the interface. User education is critical to reduce the risk of clicking on suspicious links that could trigger the reflected XSS. Additionally, administrators should enforce strong authentication mechanisms for accessing the Web Image Monitor and consider disabling the web interface if it is not required. Regular monitoring of printer logs and network traffic for anomalous activity related to the Web Image Monitor can aid in early detection of exploitation attempts. Finally, integrating Ricoh device management into centralized security monitoring solutions can improve visibility and response capabilities.