CVE-2025-54745 identifies a missing authorization vulnerability in miniOrange's Google Authenticator plugin, specifically versions up to and including 6.1.1. The core issue stems from improperly configured access control mechanisms that fail to enforce authorization checks on certain sensitive operations or API endpoints within the plugin. This allows an attacker with low-level privileges (PR:L) to perform unauthorized actions that require higher integrity, effectively escalating their privileges within the system. The vulnerability does not require user interaction (UI:N) and can be exploited remotely over the network (AV:N). The scope is unchanged (S:U), meaning the impact is confined to the vulnerable component without affecting other system components. The CVSS vector indicates no confidentiality impact (C:N), but a high integrity impact (I:H), and no availability impact (A:N). This suggests that while data confidentiality remains intact, unauthorized modifications or configuration changes can be made, potentially undermining the security posture of the affected system. The vulnerability is relevant to organizations using miniOrange's Google Authenticator plugin for two-factor authentication, which is often integrated into web applications and identity management systems. No patches or exploit code are currently publicly available, and no active exploitation has been reported. However, the presence of this vulnerability highlights the importance of proper access control enforcement in authentication-related plugins, as exploitation could lead to privilege escalation and compromise of authentication mechanisms.

For European organizations, the missing authorization vulnerability in miniOrange's Google Authenticator plugin poses a risk of unauthorized privilege escalation within authentication systems. This could allow attackers to alter authentication settings, bypass security controls, or manipulate user access rights, potentially leading to broader security breaches. Organizations relying on this plugin for critical identity and access management functions may face increased risk of internal or external attackers gaining elevated privileges. This can undermine trust in two-factor authentication processes, potentially exposing sensitive systems and data. The impact is particularly significant for sectors with stringent regulatory requirements such as finance, healthcare, and government, where authentication integrity is paramount. Additionally, the lack of confidentiality and availability impact reduces the risk of data leakage or service disruption but does not diminish the threat posed by integrity compromise. The medium severity rating suggests that while the threat is not critical, it requires timely remediation to prevent exploitation. European organizations should assess their deployment of miniOrange's Google Authenticator and prioritize mitigation to maintain compliance and security posture.

1. Monitor miniOrange's official channels for security advisories and apply patches promptly once released to address CVE-2025-54745. 2. Conduct a thorough review of access control configurations within the miniOrange Google Authenticator plugin, ensuring that all sensitive operations require appropriate authorization levels. 3. Implement strict role-based access controls (RBAC) to limit the privileges of users and service accounts interacting with the plugin. 4. Employ network segmentation and firewall rules to restrict access to authentication management interfaces to trusted administrators only. 5. Enable detailed logging and continuous monitoring of authentication-related activities to detect anomalous privilege escalations or unauthorized configuration changes. 6. Consider deploying additional multi-factor authentication layers or alternative authentication plugins with verified security postures as a temporary measure. 7. Educate system administrators and security teams about the risks associated with missing authorization vulnerabilities and the importance of access control enforcement. 8. Perform regular security assessments and penetration testing focused on authentication mechanisms to identify and remediate similar vulnerabilities proactively.