CVE-2025-64387 is a vulnerability classified under CWE-1021, which involves improper restriction of rendered UI layers or frames, commonly known as clickjacking. The affected product is Circutor's TCPRS1plus, version 1.0.14. The vulnerability arises because the web application does not implement adequate protections to prevent its pages from being embedded within frames or layers controlled by an attacker. This allows an adversary to craft a malicious webpage that loads the vulnerable page invisibly or deceptively, tricking users into clicking buttons or entering sensitive information such as login credentials. The attack exploits the user's trust and interaction, potentially leading to unauthorized actions without the user's informed consent. The CVSS 4.0 vector indicates that the attack can be performed remotely over the network without any privileges or authentication, but requires user interaction. The impact on confidentiality is low to medium due to potential credential theft; integrity impact is low as the attacker can induce actions but not directly modify data; availability impact is negligible. No known exploits have been reported in the wild, and no patches are currently linked, indicating a need for proactive mitigation. The vulnerability is particularly relevant for environments where TCPRS1plus is used to monitor or control electrical systems, as unauthorized commands or credential compromise could have operational consequences.

For European organizations, particularly those in critical infrastructure sectors such as energy management and electrical monitoring where Circutor's TCPRS1plus is deployed, this vulnerability poses a risk of credential compromise and unauthorized command execution. Attackers could leverage clickjacking to trick operators into performing unintended actions, potentially disrupting monitoring or control functions. This could lead to operational inefficiencies, data leakage, or indirect impacts on system integrity. Although the vulnerability does not allow direct system compromise without user interaction, the social engineering aspect increases risk. The medium CVSS score reflects moderate severity, but the impact could be amplified in high-stakes environments. Organizations relying on this product should consider the risk of targeted attacks aiming to exploit this vulnerability to gain footholds or escalate privileges. The lack of known exploits suggests a window for mitigation before widespread exploitation occurs.

To mitigate CVE-2025-64387, organizations should implement HTTP response headers such as X-Frame-Options with the value 'DENY' or 'SAMEORIGIN' to prevent the web application from being embedded in frames by unauthorized sites. Alternatively, use the Content Security Policy (CSP) frame-ancestors directive to restrict framing to trusted domains. If possible, update or patch the TCPRS1plus product once vendor fixes become available. In the interim, network segmentation and access controls should limit exposure of the web interface to trusted users only. User awareness training should emphasize the risks of clickjacking and encourage vigilance against suspicious UI behavior or unexpected prompts. Monitoring for unusual user interactions or access patterns can help detect attempted exploitation. Additionally, consider multi-factor authentication to reduce the impact of credential theft. Regular security assessments and penetration testing focused on UI security can help identify residual risks.