CVE-2025-47707 is a high-severity authentication bypass vulnerability affecting the Enterprise MFA - TFA (Multi-Factor Authentication - Two-Factor Authentication) module for Drupal, specifically versions from 0.0.0 before 4.7.0 and from 5.0.0 before 5.2.0. The vulnerability is classified under CWE-288, which involves authentication bypass using an alternate path or channel. This means that an attacker can circumvent the intended multi-factor authentication mechanism by exploiting an alternate authentication path or communication channel that does not enforce the MFA checks. The vulnerability does not require any privileges or user interaction and can be exploited remotely over the network (AV:N, PR:N, UI:N). The CVSS 3.1 base score of 7.5 reflects a high severity due to the complete compromise of confidentiality without affecting integrity or availability. Specifically, an attacker can gain unauthorized access to Drupal sites protected by this MFA module, bypassing the second factor and potentially accessing sensitive data or administrative functions. The lack of known exploits in the wild suggests it is a recently disclosed issue, but the ease of exploitation and the critical role of MFA in securing Drupal sites make this a significant threat. No patches are currently linked in the provided data, indicating that organizations must monitor for updates or apply mitigations promptly once available.

For European organizations using Drupal with the Enterprise MFA - TFA module, this vulnerability poses a serious risk to the confidentiality of their web applications and data. Since Drupal is widely used by government agencies, educational institutions, and enterprises across Europe, an attacker exploiting this flaw could gain unauthorized access to sensitive information, including personal data protected under GDPR. The bypass of MFA undermines one of the strongest layers of defense, increasing the risk of account takeover, data breaches, and potential lateral movement within networks. This could lead to reputational damage, regulatory fines, and operational disruptions. The vulnerability's network exploitable nature and lack of required authentication mean attackers can target exposed Drupal sites remotely, increasing the attack surface. Given the criticality of MFA in compliance and security frameworks, this flaw could also affect trust in digital services and e-government platforms in Europe.

European organizations should immediately audit their Drupal installations to identify if the Enterprise MFA - TFA module is in use and verify the version. Until official patches are released, organizations should consider temporarily disabling the vulnerable MFA module or reverting to a previous stable version without this vulnerability. Implementing additional access controls such as IP whitelisting, web application firewalls (WAFs) with custom rules to detect and block suspicious authentication bypass attempts, and enhanced monitoring of authentication logs for anomalies is advised. Organizations should also enforce strong password policies and consider alternative MFA solutions that are not affected by this vulnerability. Regularly checking Drupal security advisories and applying patches promptly once available is critical. Additionally, conducting penetration testing focused on authentication mechanisms can help identify exploitation attempts. For high-value targets, network segmentation and limiting administrative access to trusted networks can reduce exposure.