CVE-2025-11106 identifies a SQL injection vulnerability in the Simple Scheduling System version 1.0 developed by code-projects. The vulnerability is located in the addfaculty.php script, specifically in the handling of the 'falname' parameter. This parameter is susceptible to SQL injection because it lacks proper input validation or parameterized queries, allowing an attacker to craft malicious SQL statements that the backend database executes. The vulnerability can be exploited remotely without requiring authentication or user interaction, increasing its risk profile. Successful exploitation could allow attackers to read, modify, or delete data within the database, potentially leading to unauthorized data disclosure, data corruption, or denial of service. The CVSS 4.0 vector indicates low complexity and no privileges or user interaction needed, with partial impact on confidentiality, integrity, and availability. Although no exploits are currently known in the wild, the public disclosure of the vulnerability means attackers could develop or share exploits soon. The affected product is niche scheduling software, likely used in educational or organizational environments to manage faculty schedules. The lack of available patches or official fixes increases the urgency for organizations to implement mitigations or consider alternative solutions.

For European organizations, the impact of this vulnerability can be significant if the Simple Scheduling System is used to manage critical scheduling data, particularly in educational institutions, public sector organizations, or private companies relying on this software for resource planning. Exploitation could lead to unauthorized access to sensitive scheduling information, manipulation of faculty or resource data, and potential disruption of organizational operations. Confidentiality breaches could expose personal data of staff or students, raising compliance concerns under GDPR. Integrity violations could corrupt scheduling data, causing operational inefficiencies or reputational damage. Availability impacts could disrupt scheduling services, affecting organizational productivity. The remote and unauthenticated nature of the exploit increases the risk of widespread attacks, especially if attackers automate exploitation attempts. European organizations with limited cybersecurity resources or lacking timely patch management processes are particularly vulnerable. The absence of known exploits in the wild currently reduces immediate risk but does not eliminate it, as public disclosure often precedes active exploitation campaigns.

Organizations should immediately audit their use of the Simple Scheduling System version 1.0 and assess exposure of the addfaculty.php endpoint. Since no official patches are currently available, implement the following mitigations: 1) Apply strict input validation and sanitization on the 'falname' parameter, ideally replacing vulnerable code with parameterized queries or prepared statements to prevent SQL injection. 2) Employ web application firewalls (WAFs) with custom rules to detect and block SQL injection payloads targeting this endpoint. 3) Restrict network access to the scheduling system, limiting it to trusted internal IP ranges or VPN access to reduce exposure to remote attackers. 4) Monitor application logs and database logs for suspicious queries or anomalies indicative of injection attempts. 5) Educate development and operations teams about secure coding practices to prevent similar vulnerabilities. 6) Plan for an upgrade or replacement of the affected software with a secure, actively maintained alternative. 7) If possible, isolate the scheduling system database with least privilege access controls to minimize damage from potential exploitation.