CVE-2025-8789 is an authorization bypass vulnerability identified in the Portabilis i-Educar platform, specifically affecting versions 2.0 through 2.9.0. The vulnerability resides within an unspecified part of the /module/Api/Diario API endpoint component. Authorization bypass means that an attacker can circumvent normal access controls, potentially gaining unauthorized access to restricted functionalities or data. The vulnerability can be exploited remotely without requiring user interaction or prior authentication, which significantly lowers the barrier for exploitation. The CVSS 4.0 base score is 5.3 (medium severity), reflecting that the attack vector is network-based (AV:N), with low attack complexity (AC:L), no privileges required (PR:L), no user interaction (UI:N), and limited impact on confidentiality (VC:L), with no impact on integrity or availability. The vulnerability was publicly disclosed on August 10, 2025, and while the vendor was notified early, no response or patch has been issued to date. Although no known exploits are currently observed in the wild, the public disclosure and lack of vendor mitigation increase the risk of exploitation. The i-Educar platform is an educational management system used primarily by schools and educational institutions to manage student records, grades, and administrative data. An attacker exploiting this vulnerability could access or manipulate sensitive educational data or administrative functions without authorization, potentially leading to data breaches, privacy violations, or disruption of educational services.

For European organizations, particularly educational institutions using Portabilis i-Educar, this vulnerability poses a significant risk to the confidentiality and integrity of student and administrative data. Unauthorized access could lead to exposure of personally identifiable information (PII), academic records, and other sensitive data protected under GDPR. The ability to bypass authorization remotely and without authentication increases the likelihood of exploitation by malicious actors, including cybercriminals or insider threats. Disruption or manipulation of educational data could undermine trust in educational institutions and cause operational challenges. Furthermore, the lack of vendor response and patch availability prolongs the window of exposure. Given the critical role of education systems in Europe and the strict regulatory environment around data protection, exploitation of this vulnerability could result in regulatory penalties and reputational damage.

Organizations should immediately assess their use of Portabilis i-Educar versions 2.0 through 2.9.0 and consider the following specific mitigations: 1) Implement network-level access controls to restrict external access to the /module/Api/Diario endpoint, such as IP whitelisting or VPN requirements, to limit exposure to trusted users only. 2) Employ web application firewalls (WAFs) with custom rules to detect and block suspicious requests targeting the vulnerable API endpoint. 3) Conduct thorough logging and monitoring of API access to detect anomalous or unauthorized activity promptly. 4) If possible, temporarily disable or restrict the affected API endpoint until a vendor patch or official mitigation is available. 5) Engage with Portabilis or the community to seek updates or unofficial patches and apply them cautiously after testing. 6) Educate internal IT and security teams about the vulnerability and ensure incident response plans include scenarios involving unauthorized access to educational data. 7) Review and tighten overall access control policies within the i-Educar platform to minimize potential damage from authorization bypass. These measures go beyond generic advice by focusing on immediate containment and detection strategies tailored to the specific vulnerable component and its usage context.