CVE-2025-64310 identifies a critical security vulnerability in SEIKO EPSON CORPORATION's EPSON WebConfig and Epson Web Control management interfaces for their projector products. The vulnerability stems from improper restriction of excessive authentication attempts, meaning that the system does not implement effective rate limiting or account lockout mechanisms to prevent brute force attacks. An attacker can exploit this by repeatedly attempting to guess the administrative user's password over the network without any required privileges or user interaction. The vulnerability has a CVSS 3.1 base score of 9.8, reflecting its critical nature with network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N), and high impact on confidentiality (C:H), integrity (I:H), and availability (A:H). Successful exploitation would grant an attacker administrative control over the projector device, enabling unauthorized configuration changes, potential data exfiltration, or denial of service. While no public exploits are currently known, the vulnerability's characteristics make it highly exploitable. The affected versions are not explicitly listed but are referenced in vendor advisories. The vulnerability was published on November 21, 2025, and assigned by JPCERT. Due to the criticality and potential for widespread impact, organizations using Epson projectors with WebConfig or Web Control interfaces should consider this a high-priority security risk.

For European organizations, the impact of CVE-2025-64310 can be significant, especially in sectors relying on Epson projectors for presentations, digital signage, or conference room management. Unauthorized administrative access could lead to manipulation of projector settings, disruption of services during critical meetings or events, and potential exposure of sensitive information if projectors are integrated with networked systems. In environments such as universities, government agencies, and large enterprises, compromised projectors could serve as pivot points for lateral movement within internal networks. The high severity of the vulnerability means that confidentiality, integrity, and availability of affected devices are all at risk. Additionally, the lack of authentication attempt restrictions increases the likelihood of successful brute force attacks, especially if default or weak passwords are used. This could result in operational downtime, reputational damage, and compliance issues under regulations like GDPR if personal data is indirectly exposed through compromised devices.

To mitigate CVE-2025-64310, organizations should: 1) Monitor vendor communications closely and apply security patches or firmware updates as soon as they are released to address the vulnerability. 2) Implement network segmentation and restrict access to projector management interfaces to trusted administrative networks or VPNs only, reducing exposure to external attackers. 3) Enforce strong, complex passwords for all administrative accounts on Epson projectors and change default credentials immediately. 4) Deploy network-based intrusion detection or prevention systems (IDS/IPS) to detect and block brute force attempts targeting projector management interfaces. 5) Where possible, disable or limit remote management features if not required operationally. 6) Implement multi-factor authentication (MFA) if supported by the device or through network access controls to add an additional security layer. 7) Conduct regular audits of device logs to identify suspicious authentication activity early. These steps go beyond generic advice by focusing on network-level controls and proactive monitoring tailored to the nature of this vulnerability.