EUVD-2025-199796

Comprehensive Technical Analysis of EUVD-2025-199796

1. Vulnerability Assessment and Severity Evaluation

The vulnerability described in EUVD-2025-199796 pertains to an Authentication Bypass issue in the FindAll Membership plugin for WordPress. This vulnerability allows unauthenticated attackers to log in as administrative users, provided they have an existing account on the site and access to the administrative user's email. The severity of this vulnerability is rated with a CVSS Base Score of 9.8, which is considered critical.

CVSS Vector Breakdown:

• AV:N (Network Vector): The vulnerability is exploitable over the network.
• AC:L (Low Complexity): The attack requires low skill or resources.
• PR:N (No Privileges Required): No prior authentication is needed.
• UI:N (No User Interaction): No user interaction is required.
• S:U (Unchanged): The impact does not change the scope.
• C:H (High Confidentiality Impact): Complete loss of confidentiality.
• I:H (High Integrity Impact): Complete loss of integrity.
• A:H (High Availability Impact): Complete loss of availability.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Unauthenticated Access: Attackers can exploit this vulnerability without needing any prior authentication.
• Email Access: Attackers need access to the administrative user's email to complete the authentication bypass.

Exploitation Methods:

• Account Creation: Attackers can create a temporary user account using the default functionality.
• Email Compromise: Attackers can compromise the administrative user's email through phishing, social engineering, or other means.
• Authentication Bypass: Using the compromised email, attackers can bypass the authentication mechanism and gain administrative access.

3. Affected Systems and Software Versions

Affected Software:

• FindAll Membership plugin for WordPress

Affected Versions:

• All versions up to and including 1.0.4

Vendor:

• Elated Themes

4. Recommended Mitigation Strategies

Immediate Actions:

• Update the Plugin: Ensure that the FindAll Membership plugin is updated to a version higher than 1.0.4.
• Disable Temporary User Functionality: If possible, disable the temporary user functionality to prevent easy account creation.
• Monitor Administrative Emails: Implement strict monitoring and security measures for administrative email accounts.

Long-Term Strategies:

• Regular Audits: Conduct regular security audits of all plugins and themes used in the WordPress environment.
• Access Controls: Implement strong access controls and multi-factor authentication (MFA) for administrative accounts.
• User Education: Educate users about phishing and social engineering attacks to prevent email compromises.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to the European cybersecurity landscape, particularly for organizations and individuals using the FindAll Membership plugin. The potential for unauthenticated attackers to gain administrative access can lead to data breaches, unauthorized modifications, and service disruptions. This underscores the importance of timely updates, regular security assessments, and robust access control measures.

6. Technical Details for Security Professionals

Vulnerability Details:

• The vulnerability arises from improper handling of user authentication data in the 'findall_membership_check_facebook_user' and 'findall_membership_check_google_user' functions.
• The plugin fails to properly log in a user with the verified data, allowing unauthenticated access.

Detection and Response:

• Log Analysis: Monitor logs for unusual login attempts and administrative actions.
• Intrusion Detection Systems (IDS): Deploy IDS to detect and alert on suspicious activities related to the FindAll Membership plugin.
• Incident Response Plan: Develop and implement an incident response plan to quickly address any detected exploitation attempts.

References:

• Wordfence Threat Intelligence
• FindAll Business Directory Theme
• NVD CVE-2025-13539

By addressing this vulnerability promptly and implementing robust security measures, organizations can mitigate the risk of unauthorized access and protect their digital assets effectively.