CVE-2025-30992 is a high-severity vulnerability classified under CWE-98, which pertains to improper control of filenames used in include or require statements within PHP applications. Specifically, this vulnerability affects the thembay Puca product, versions up to 2.6.33. The flaw allows an attacker to perform a PHP Remote File Inclusion (RFI) attack, which can lead to the inclusion and execution of arbitrary remote code on the affected server. This occurs because the application does not properly validate or sanitize user-supplied input that determines the filename for PHP's include or require functions. Consequently, an attacker can manipulate the input to include malicious files hosted on external servers, resulting in full compromise of the web server environment. The CVSS v3.1 base score is 8.1, indicating a high severity level. The vector string (AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H) shows that the attack can be performed remotely over the network without any privileges or user interaction, but requires high attack complexity. Successful exploitation impacts confidentiality, integrity, and availability severely, allowing data theft, code execution, and potential service disruption. No known exploits are currently in the wild, and no patches have been linked yet, which suggests that organizations using thembay Puca should urgently assess their exposure and apply mitigations. The vulnerability is particularly dangerous in web-facing environments where Puca is deployed, as it can lead to complete server takeover.

For European organizations, the impact of CVE-2025-30992 can be substantial, especially for those relying on the thembay Puca product in their web infrastructure. Exploitation could lead to unauthorized access to sensitive data, including personal data protected under GDPR, resulting in regulatory penalties and reputational damage. The ability to execute arbitrary code remotely could allow attackers to deploy malware, ransomware, or use the compromised servers as pivot points for further attacks within corporate networks. This could disrupt business operations, cause data breaches, and lead to significant financial losses. Organizations in sectors such as e-commerce, finance, healthcare, and government, where web applications are critical, are particularly at risk. Additionally, the high severity and remote exploitation capability mean that attackers can target vulnerable systems en masse, increasing the likelihood of widespread impact across European enterprises using this software.

Given the absence of an official patch at this time, European organizations should implement immediate compensating controls. First, restrict access to the affected PHP application by limiting exposure to the internet using web application firewalls (WAFs) configured to detect and block suspicious include/require parameter manipulations. Input validation and sanitization should be enforced at the application level to prevent malicious filename inputs. Organizations should audit and monitor web server logs for unusual requests that attempt to exploit file inclusion. Employing network segmentation to isolate web servers running thembay Puca can reduce lateral movement risks. If possible, disable or restrict PHP functions like allow_url_include and allow_url_fopen in the PHP configuration to prevent remote file inclusion. Regular backups and incident response plans should be updated to prepare for potential exploitation. Finally, organizations should track vendor communications closely for patches or updates and apply them promptly once available.