CVE-2025-7030 is a vulnerability identified in the Drupal Two-factor Authentication (TFA) module, specifically affecting versions prior to 1.11.0 (notably version 0.0.0 as mentioned). The vulnerability is categorized under CWE-267, which relates to 'Privilege Defined With Unsafe Actions.' This means that the access control mechanisms within the TFA module are incorrectly configured, allowing privilege levels to be exploited due to unsafe or overly permissive actions. The core issue is that certain security levels or privileges are defined in a way that does not properly restrict access, potentially allowing an attacker with some level of authenticated access (high privileges required) to bypass intended controls. The CVSS v3.1 base score is 6.5, indicating a medium severity level. The vector string (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H) reveals that the attack can be performed remotely over the network (AV:N) with low attack complexity (AC:L), but requires high privileges (PR:H) and no user interaction (UI:N). The scope is unchanged (S:U), and the impact is high on confidentiality (C:H), no impact on integrity (I:N), and high impact on availability (A:H). This suggests an attacker with high privileges could exploit the vulnerability to gain unauthorized access to confidential data and disrupt availability, but not modify data integrity. There are no known exploits in the wild at the time of publication, and no patches have been linked yet. The vulnerability affects the Drupal TFA module, a widely used plugin to enhance login security by requiring a second authentication factor. Improper access control in this module undermines the security benefits of two-factor authentication, potentially allowing attackers to bypass or weaken authentication protections.

For European organizations, this vulnerability poses a significant risk especially for those relying on Drupal CMS with the TFA module for securing user authentication. The high confidentiality impact means sensitive user data, including personal and possibly GDPR-protected information, could be exposed if exploited. The high availability impact could lead to denial of service or disruption of critical web services, affecting business continuity. Since the vulnerability requires high privileges, it implies that an attacker must already have some level of access, but could escalate or abuse privileges to compromise the authentication mechanism. This could facilitate lateral movement within networks or unauthorized access to restricted resources. Given the widespread use of Drupal in government, education, and enterprise sectors across Europe, exploitation could lead to regulatory non-compliance, reputational damage, and financial losses. The lack of known exploits currently provides a window for mitigation, but organizations should act promptly to prevent future attacks.

1. Immediate upgrade: Organizations should upgrade the Drupal Two-factor Authentication module to version 1.11.0 or later once available, as this version addresses the vulnerability. 2. Access control review: Conduct a thorough audit of user roles and permissions in Drupal to ensure no excessive privileges are granted, minimizing the risk of privilege abuse. 3. Restrict administrative access: Limit high privilege accounts and enforce strict access policies, including network segmentation and IP whitelisting for administrative interfaces. 4. Monitor logs: Implement enhanced logging and monitoring for authentication events and privilege escalations to detect suspicious activities early. 5. Multi-layered authentication: Complement TFA with additional security controls such as Web Application Firewalls (WAFs) and anomaly detection systems. 6. Incident response readiness: Prepare and test incident response plans specifically for authentication bypass scenarios. 7. Stay informed: Subscribe to Drupal security advisories to receive timely updates and patches. These steps go beyond generic advice by focusing on privilege management, monitoring, and layered defenses tailored to the nature of this vulnerability.