The vulnerability CVE-2025-60641 affects the Vfront 0.99.52 codebase, specifically the mexcel.php file, which processes user input via the $_POST['mexcel'] parameter. This input is base64-decoded and then passed directly to PHP's unserialize() function without any validation or restriction on allowed classes. This unsafe deserialization enables an attacker to craft malicious serialized PHP objects that, when unserialized, can trigger arbitrary code execution or other malicious behaviors depending on the classes available in the application or its dependencies. Potential impacts include Remote Code Execution (RCE), allowing full system compromise; SQL Injection, which can lead to data theft or manipulation; Path Traversal, enabling unauthorized file access; and Denial of Service (DoS) through resource exhaustion or application crashes. The vulnerability arises from the inherent dangers of PHP object injection combined with the absence of input validation or use of the allowed_classes option introduced in PHP 7.0 to mitigate such risks. No official CVSS score has been assigned yet, but the vulnerability's characteristics indicate a high severity. There are no known exploits in the wild at the time of publication, but the vulnerability is publicly disclosed and exploitable without authentication or user interaction, increasing the urgency for remediation.

For European organizations, the impact of CVE-2025-60641 can be severe. Vfront is often used as a web-based database frontend and reporting tool, which means compromised systems could lead to unauthorized access to sensitive business or personal data, violating GDPR and other data protection regulations. Successful exploitation could result in full server takeover, data breaches, or service outages, disrupting business operations and damaging reputation. Public sector entities and enterprises relying on Vfront for database management are particularly at risk. The ability to execute arbitrary code remotely without authentication makes this vulnerability a critical threat to confidentiality, integrity, and availability of affected systems. Additionally, exploitation could facilitate lateral movement within networks, increasing the scope of compromise. The lack of known patches or mitigations at the time of disclosure further elevates the risk for European organizations that have not yet implemented workarounds or mitigations.

Immediate mitigation steps include auditing all instances of Vfront 0.99.52 and disabling or restricting access to the mexcel.php endpoint. Developers should replace the unsafe unserialize(base64_decode($_POST['mexcel'])) call with safer alternatives, such as using json_decode for data deserialization or implementing strict validation and sanitization of input. If unserialize must be used, the allowed_classes option should be explicitly set to false or a strict whitelist of safe classes to prevent object injection. Organizations should monitor web server logs for suspicious POST requests containing base64-encoded payloads targeting mexcel.php. Network-level protections such as Web Application Firewalls (WAFs) can be configured to block or alert on such requests. Applying any available patches or updates from Vfront maintainers as soon as they are released is critical. Additionally, conducting a thorough security review of all PHP deserialization usage in the environment is recommended to identify and remediate similar vulnerabilities. Backup critical data and prepare incident response plans in case of exploitation.