EUVD-2025-7717

Comprehensive Technical Analysis of EUVD-2025-7717

1. Vulnerability Assessment and Severity Evaluation

The vulnerability EUVD-2025-7717, also known as CVE-2025-26916, pertains to an "Improper Control of Filename for Include/Require Statement in PHP Program" within the Massive Dynamic theme for WordPress. This vulnerability is classified as a 'PHP Remote File Inclusion' (RFI) issue. The CVSS (Common Vulnerability Scoring System) base score of 9.0 indicates a critical severity level. The CVSS vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H breaks down as follows:

• Attack Vector (AV): Network (N) - The vulnerability is exploitable over the network.
• Attack Complexity (AC): High (H) - Specialized access conditions or extenuating circumstances are required.
• Privileges Required (PR): None (N) - No privileges are required to exploit the vulnerability.
• User Interaction (UI): None (N) - No user interaction is required.
• Scope (S): Changed (C) - The vulnerability can affect resources beyond the security scope managed by the security authority.
• Confidentiality (C): High (H) - There is a high impact on the confidentiality of the system.
• Integrity (I): High (H) - There is a high impact on the integrity of the system.
• Availability (A): High (H) - There is a high impact on the availability of the system.

2. Potential Attack Vectors and Exploitation Methods

The primary attack vector for this vulnerability is through the manipulation of input parameters that are used in PHP include or require statements. An attacker can exploit this vulnerability by:

• Crafting Malicious URLs: An attacker can craft a URL that includes a reference to a remote file, which the vulnerable PHP script will then include and execute.
• Local File Inclusion (LFI): If the attacker can control the filename parameter, they may also attempt to include local files, potentially leading to information disclosure or code execution.
• Remote File Inclusion (RFI): By including a remote file hosted on a server controlled by the attacker, the attacker can execute arbitrary code on the vulnerable server.

3. Affected Systems and Software Versions

The vulnerability affects the Massive Dynamic theme for WordPress, specifically versions from n/a through 8.2. This implies that all versions up to and including 8.2 are vulnerable. Users of this theme should be particularly vigilant.

4. Recommended Mitigation Strategies

To mitigate the risk associated with this vulnerability, the following strategies are recommended:

• Update to the Latest Version: Ensure that the Massive Dynamic theme is updated to a version that addresses this vulnerability.
• Input Validation: Implement strict input validation and sanitization for all user-supplied data, especially for parameters used in include or require statements.
• Disable Remote Includes: Configure PHP to disable remote file inclusion by setting allow_url_include to Off in the php.ini file.
• Web Application Firewall (WAF): Deploy a WAF to monitor and block suspicious requests that attempt to exploit this vulnerability.
• Regular Security Audits: Conduct regular security audits and code reviews to identify and remediate similar vulnerabilities.

5. Impact on European Cybersecurity Landscape

The impact of this vulnerability on the European cybersecurity landscape is significant due to the widespread use of WordPress and its themes. Organizations and individuals using the Massive Dynamic theme are at risk of data breaches, unauthorized access, and potential loss of service. The high CVSS score underscores the critical nature of this vulnerability, necessitating immediate attention from cybersecurity professionals and stakeholders.

6. Technical Details for Security Professionals

For security professionals, the following technical details are pertinent:

• Vulnerability Type: PHP Remote File Inclusion (RFI)
• Affected Component: Massive Dynamic theme for WordPress
• Vulnerable Versions: n/a through 8.2
• Exploitation: The vulnerability can be exploited by manipulating the filename parameter in include or require statements to include remote or local files.
• Mitigation: Update the theme, implement input validation, disable remote includes, deploy WAF, and conduct regular security audits.
• References: For more detailed information, refer to the Patchstack vulnerability database entry at Patchstack Reference.

By addressing this vulnerability promptly and effectively, organizations can significantly reduce the risk of exploitation and protect their digital assets.