CVE-2025-62029 is a remote file inclusion vulnerability found in the themesion Grevo PHP application framework, affecting versions up to and including 2.4. The root cause is improper validation or control over the filename parameter used in PHP's include or require statements, which allows an attacker to specify a remote file to be included and executed by the server. This type of vulnerability enables attackers to execute arbitrary PHP code remotely, potentially leading to full system compromise. The vulnerability does not require authentication or user interaction, and can be exploited over the network (AV:N), although it has a higher attack complexity (AC:H), indicating some conditions must be met for successful exploitation. The CVSS v3.1 base score is 8.1, reflecting high impact on confidentiality, integrity, and availability (all rated high). No patches or fixes are currently linked, and no known exploits have been reported in the wild as of the publication date (October 22, 2025). The vulnerability is particularly dangerous because it allows attackers to execute arbitrary code remotely, which can lead to data theft, defacement, or denial of service. The affected product, Grevo, is used in web development contexts, making web-facing servers vulnerable. The lack of authentication and user interaction requirements increases the risk profile significantly. Organizations using Grevo should urgently assess their exposure and implement mitigations or await vendor patches.

For European organizations, this vulnerability poses a critical risk to web servers running the affected Grevo versions. Successful exploitation can lead to unauthorized remote code execution, enabling attackers to steal sensitive data, modify or delete information, disrupt services, or use compromised servers as pivot points for further attacks. This can impact confidentiality, integrity, and availability of critical business applications. Given the widespread use of PHP-based web applications in Europe, especially in sectors like e-commerce, finance, and public services, the potential damage includes financial loss, reputational damage, regulatory penalties under GDPR, and operational disruption. The vulnerability's remote and unauthenticated nature increases the attack surface, making it attractive for cybercriminals and potentially nation-state actors. The absence of known exploits currently provides a window for proactive defense, but the high CVSS score indicates that once exploited, the consequences are severe.

1. Immediate mitigation should include restricting PHP include paths to trusted directories only, preventing inclusion of remote files via configuration directives such as 'allow_url_include=Off' and 'allow_url_fopen=Off' in php.ini. 2. Employ web application firewalls (WAFs) with rules to detect and block suspicious include/require requests or unusual URL parameters. 3. Conduct thorough code reviews and input validation to ensure that filenames used in include/require statements are strictly controlled and sanitized. 4. Monitor web server logs for anomalous requests that attempt to exploit file inclusion vulnerabilities. 5. Isolate vulnerable applications in segmented network zones to limit lateral movement if compromised. 6. Engage with the vendor (themesion) for patches or updates and apply them promptly once available. 7. Consider temporary disabling or replacing the affected Grevo components if immediate patching is not feasible. 8. Educate development and operations teams about secure coding practices related to file inclusion. 9. Implement intrusion detection systems (IDS) tuned to detect remote file inclusion attack patterns. 10. Regularly backup critical data and test recovery procedures to minimize impact of potential attacks.