CVE-2025-64359 is a vulnerability classified as Improper Control of Filename for Include/Require Statement in PHP, commonly known as a Remote File Inclusion (RFI) flaw, found in the StylemixThemes Consulting WordPress plugin. This vulnerability exists because the plugin fails to properly validate or sanitize user-controlled input that determines the filename used in PHP include or require statements. As a result, an attacker can manipulate the input to include arbitrary files from remote servers or local paths, leading to remote code execution on the web server hosting the plugin. The affected versions include all releases prior to 6.7.5, with no specific version range provided. The vulnerability was published on October 31, 2025, and no CVSS score has been assigned yet. Although no known exploits are currently reported in the wild, the nature of RFI vulnerabilities makes them highly attractive targets for attackers seeking to gain unauthorized access, execute malicious code, or pivot within compromised networks. The plugin is commonly used in WordPress environments for consulting-related websites, which may contain sensitive business information. The vulnerability impacts the confidentiality, integrity, and availability of affected systems by enabling attackers to execute arbitrary PHP code remotely, potentially leading to data breaches, defacement, malware deployment, or full system compromise. The lack of authentication requirements and the remote exploitation vector increase the risk profile. The absence of patches at the time of reporting necessitates urgent attention from administrators to monitor and apply updates once available. This vulnerability highlights the critical need for secure coding practices around file inclusion and input validation in PHP applications.

For European organizations, the impact of CVE-2025-64359 can be severe. Many businesses rely on WordPress and associated themes/plugins like StylemixThemes Consulting for their online presence, marketing, and client engagement. Exploitation could lead to unauthorized remote code execution, allowing attackers to steal sensitive data, deface websites, deploy ransomware or other malware, and disrupt business operations. This could damage reputation, incur regulatory penalties under GDPR for data breaches, and cause financial losses. Organizations in sectors such as consulting, professional services, and SMEs that use this plugin are particularly vulnerable. The ability to execute code remotely without authentication means attackers can compromise systems at scale if the vulnerability is widespread. Additionally, compromised websites can be used as launchpads for further attacks against internal networks or customers. The threat also poses risks to hosting providers and managed service providers supporting European clients. Overall, the vulnerability undermines trust in digital services and necessitates rapid mitigation to prevent exploitation.

1. Immediately upgrade the StylemixThemes Consulting plugin to version 6.7.5 or later once the patch is released by the vendor. 2. Until an official patch is available, implement manual code review and hardening by sanitizing and validating all inputs used in include or require statements to ensure only allowed filenames or paths are processed. 3. Employ Web Application Firewalls (WAFs) with rules to detect and block suspicious file inclusion attempts or unusual URL parameters targeting the plugin. 4. Restrict PHP configuration settings such as disabling allow_url_include and allow_url_fopen to prevent remote file inclusion. 5. Monitor web server and application logs for anomalous requests that attempt to exploit file inclusion vulnerabilities. 6. Conduct regular vulnerability scans and penetration tests focusing on WordPress plugins and themes. 7. Educate development and IT teams on secure coding practices related to file inclusion and input validation. 8. Isolate critical web applications and implement least privilege principles to limit the impact of potential exploitation. 9. Maintain up-to-date backups and incident response plans to recover quickly if compromise occurs. These steps go beyond generic advice by focusing on immediate patching, configuration hardening, and proactive detection tailored to this specific RFI vulnerability.