CVE-2025-54745 identifies a missing authorization vulnerability in miniOrange's Google Authenticator plugin, specifically versions up to and including 6.1.1. The vulnerability arises from incorrectly configured access control security levels, which means that certain operations or administrative functions within the plugin can be accessed without proper authorization checks. This can allow an attacker, potentially with limited or no privileges, to perform actions that should be restricted, such as modifying authentication settings, bypassing two-factor authentication enforcement, or accessing sensitive user data. The vulnerability is classified as a missing authorization issue rather than an authentication bypass, indicating that the attacker may already have some level of access but can escalate privileges or perform unauthorized actions due to flawed access control logic. No CVSS score has been assigned yet, and no public exploits have been reported, but the flaw is significant because it undermines the security guarantees of two-factor authentication, a critical defense mechanism against account compromise. The plugin is widely used in WordPress environments to add Google Authenticator-based two-factor authentication, making it a valuable target for attackers aiming to weaken authentication controls. The lack of a patch link suggests that a fix may not yet be available, emphasizing the need for immediate attention once released.

For European organizations, the impact of this vulnerability can be substantial. Two-factor authentication is a key security control to protect sensitive systems and data, especially in sectors like finance, healthcare, and government. Exploiting this vulnerability could allow attackers to bypass or weaken two-factor authentication protections, leading to unauthorized access to critical systems and data breaches. This could result in loss of confidentiality, integrity, and availability of sensitive information, regulatory non-compliance (e.g., GDPR violations), reputational damage, and financial losses. Organizations relying on miniOrange's Google Authenticator plugin for securing WordPress-based portals or internal applications are particularly at risk. The absence of known exploits currently provides a window for proactive mitigation, but the potential for future exploitation remains high given the critical nature of the flaw. Additionally, the vulnerability could be leveraged in targeted attacks against high-value European entities, especially those with lax access control configurations or insufficient monitoring.

European organizations should immediately audit their use of miniOrange's Google Authenticator plugin to identify affected versions (<= 6.1.1). Until a patch is released, organizations should consider disabling the plugin or replacing it with alternative two-factor authentication solutions that have verified secure access controls. Review and tighten access control policies related to the plugin, ensuring that only trusted administrators have permissions to modify authentication settings. Implement enhanced monitoring and logging around authentication events and administrative actions to detect suspicious activity early. Conduct penetration testing and vulnerability assessments focused on access control mechanisms within authentication plugins. Once a patch is available, apply it promptly and verify that authorization checks are correctly enforced. Additionally, educate administrators about the risks of misconfigured access controls and enforce the principle of least privilege. Consider multi-layered security controls such as network segmentation and endpoint protection to reduce the impact of potential exploitation.