CVE-2025-45814 is a security vulnerability affecting NS3000 versions 8.1.1.125110, 7.2.8.124852, and 7.x, as well as NS2000 version 7.02.08. The vulnerability stems from missing authentication checks in the query.fcgi endpoint. This flaw allows attackers to perform session hijacking attacks by exploiting the lack of proper authentication validation. Specifically, the query.fcgi endpoint fails to verify the legitimacy of session tokens or user credentials before processing requests, enabling an attacker to impersonate an authenticated user and gain unauthorized access to the system. The vulnerability affects multiple versions of the NS3000 and NS2000 product lines, which are network storage or management devices commonly used in enterprise environments. Although no known exploits are currently reported in the wild, the nature of the vulnerability suggests that an attacker with network access could intercept or craft requests to hijack active sessions, potentially leading to unauthorized data access, manipulation, or disruption of services. The absence of a CVSS score indicates that the vulnerability has not yet been fully evaluated for severity, but the missing authentication on a critical endpoint that handles session management is a significant security concern. The vulnerability was published on July 2, 2025, with the reservation date on April 22, 2025, and no patches or mitigation links have been provided at this time.

For European organizations, this vulnerability poses a serious risk to confidentiality, integrity, and availability of data managed by affected NS3000 and NS2000 devices. Session hijacking can allow attackers to bypass access controls, leading to unauthorized access to sensitive information, configuration settings, or administrative functions. This could result in data breaches, disruption of business operations, or further lateral movement within the network. Organizations relying on these devices for critical storage or network management functions could face operational downtime or compliance violations, especially under stringent European data protection regulations such as GDPR. The risk is heightened in environments where these devices are exposed to untrusted networks or where network segmentation is insufficient. Additionally, the lack of authentication checks could be exploited by insider threats or attackers who have gained initial footholds within the network, amplifying the potential damage.

Given the absence of official patches, European organizations should implement immediate compensating controls. These include restricting network access to the query.fcgi endpoint by implementing strict firewall rules and network segmentation to limit exposure only to trusted management networks. Enforce strong monitoring and logging of all access attempts to the affected devices, focusing on unusual session activity or repeated access failures. Employ multi-factor authentication (MFA) on management interfaces where possible to reduce the risk of session hijacking. Regularly update and audit device firmware and software to ensure timely application of any future patches. Additionally, organizations should conduct internal penetration testing and vulnerability assessments targeting these endpoints to identify potential exploitation attempts. Educating administrators about the risk and ensuring that session tokens are handled securely within the network can further reduce attack surface. Finally, consider isolating or replacing vulnerable devices if they are critical to sensitive operations and no timely patch is available.