CVE-2025-26859 is an uncontrolled search path element vulnerability found in RSUPPORT CO., LTD.'s RemoteView PC Application Console versions prior to 6.0.2. This vulnerability arises because the application loads DLLs without properly validating or restricting the search path, allowing an attacker to place a crafted malicious DLL in the same directory as the application executable. When the application loads this DLL, it results in arbitrary code execution under the context of the user running the application. The attack vector requires local access to the system and user interaction, such as convincing the user to launch the vulnerable application in a directory containing the malicious DLL. No privileges are required to exploit this vulnerability, increasing its risk. The CVSS v3.0 score of 7.8 reflects high impact on confidentiality, integrity, and availability, as arbitrary code execution can lead to data theft, system compromise, or denial of service. Although no exploits are currently known in the wild, the vulnerability's nature makes it a significant threat, especially in environments where RemoteView is used for remote desktop management or support. The vulnerability was publicly disclosed on October 15, 2025, with no official patch links provided in the source data, but upgrading to version 6.0.2 or later is recommended. The vulnerability is classified under the category of path traversal or DLL hijacking issues, common in Windows-based applications that do not securely handle DLL loading paths.

For European organizations, the impact of CVE-2025-26859 can be severe. RemoteView is commonly used for remote support and desktop management, often in critical sectors such as finance, healthcare, manufacturing, and government. Successful exploitation could allow attackers to execute arbitrary code, leading to unauthorized access to sensitive data, disruption of business operations, or lateral movement within networks. This could result in data breaches, intellectual property theft, or ransomware deployment. The requirement for local access and user interaction somewhat limits remote exploitation but does not eliminate risk, especially in environments where users may be targeted with social engineering or where attackers have already gained limited access. The high confidentiality, integrity, and availability impacts mean that organizations could face regulatory penalties under GDPR if personal data is compromised. Additionally, operational disruptions could affect service delivery and damage organizational reputation.

To mitigate CVE-2025-26859, European organizations should immediately upgrade RemoteView PC Application Console to version 6.0.2 or later, where the vulnerability is addressed. In the absence of an official patch, organizations should restrict write permissions to the application installation directories to prevent unauthorized DLL placement. Implement application whitelisting and monitor directories for unauthorized files. Educate users about the risks of running applications from untrusted directories and the dangers of social engineering attacks that might induce them to launch vulnerable software in compromised environments. Employ endpoint detection and response (EDR) solutions to detect suspicious DLL loading or process behaviors. Network segmentation can limit the spread of an attacker who gains initial access. Regularly audit and inventory software versions to ensure vulnerable versions are not in use. Finally, maintain robust backup and recovery procedures to minimize impact in case of exploitation.