The vulnerability identified as CVE-2025-65897 affects the zdh_web platform, a tool used for data collection, processing, monitoring, scheduling, and management. In versions up to 5.6.17, the application fails to sufficiently validate file upload paths. This insufficient validation allows an authenticated user to write arbitrary files anywhere on the server's filesystem. By exploiting this, an attacker can overwrite existing files, which may include configuration files, scripts, or binaries critical to the system's operation. Such overwrites can lead to privilege escalation, where the attacker gains higher-level access than intended, or remote code execution, enabling the attacker to run arbitrary code on the server. The vulnerability requires the attacker to be authenticated, which limits exposure to insiders or attackers who have compromised credentials. No CVSS score has been assigned yet, and no known exploits are reported in the wild, but the potential impact is significant. The lack of patch links indicates that a fix may not yet be publicly available, emphasizing the need for proactive mitigation. The vulnerability affects the confidentiality, integrity, and availability of the affected systems, as attackers can manipulate files and potentially disrupt services or exfiltrate data.

For European organizations, the impact of CVE-2025-65897 can be substantial. Organizations relying on zdh_web for critical data management and operational workflows risk unauthorized file manipulation leading to system compromise. This could result in data breaches, operational disruptions, and loss of trust. Privilege escalation and remote code execution can allow attackers to move laterally within networks, potentially affecting other systems and sensitive data. Industries such as manufacturing, utilities, and government agencies using zdh_web for monitoring and scheduling are particularly vulnerable. The breach of confidentiality and integrity could lead to regulatory penalties under GDPR if personal or sensitive data is exposed. Additionally, availability impacts could disrupt essential services, causing economic and reputational damage. The requirement for authentication reduces the attack surface but does not eliminate risk, especially if credential theft or insider threats are present.

European organizations should implement the following specific mitigations: 1) Immediately restrict file upload permissions to the minimum necessary and enforce strict access controls on zdh_web user accounts, especially limiting upload capabilities to trusted users. 2) Monitor and audit file upload activities and server filesystem changes to detect suspicious behavior early. 3) Employ application-layer firewalls or intrusion detection systems to identify anomalous file upload patterns. 4) Isolate the zdh_web server in a segmented network zone to limit lateral movement in case of compromise. 5) Regularly update and patch zdh_web as soon as vendor fixes become available; in the absence of patches, consider temporary disabling of file upload features if feasible. 6) Enforce strong authentication mechanisms, such as multi-factor authentication, to reduce the risk of credential compromise. 7) Conduct internal penetration testing and code reviews focusing on file upload functionality to identify and remediate similar issues proactively.