CVE-2025-55708 is a high-severity SQL Injection vulnerability (CWE-89) affecting the ExpressTech Systems product 'Quiz And Survey Master' up to version 10.2.4. SQL Injection vulnerabilities occur when user-supplied input is improperly sanitized or neutralized before being incorporated into SQL queries. This allows an attacker to manipulate the SQL commands executed by the backend database. Specifically, this vulnerability enables an attacker with at least low privileges (PR:L) and no user interaction (UI:N) to remotely exploit the system over the network (AV:N) with low attack complexity (AC:L). The vulnerability impacts confidentiality (C:H), with no direct impact on integrity (I:N) and only a low impact on availability (A:L). The scope is changed (S:C), indicating that the vulnerability affects resources beyond the initially vulnerable component, potentially allowing access to other parts of the system or database. Although no known exploits are currently reported in the wild, the high CVSS score of 8.5 reflects the significant risk posed by this vulnerability if exploited. The lack of available patches at the time of publication increases the urgency for mitigation. The vulnerability affects all versions of Quiz And Survey Master up to 10.2.4, a popular WordPress plugin used for creating quizzes and surveys, which often interfaces with backend databases storing user responses and potentially sensitive data. Exploitation could allow attackers to extract sensitive information from the database, such as user credentials, survey results, or administrative data, without authentication or user interaction, posing a serious threat to data confidentiality and privacy.

For European organizations, the impact of this vulnerability is significant due to the widespread use of WordPress and its plugins, including Quiz And Survey Master, in various sectors such as education, market research, healthcare, and government services. Successful exploitation could lead to unauthorized disclosure of sensitive personal data, violating the EU General Data Protection Regulation (GDPR) and resulting in substantial legal and financial penalties. The confidentiality breach could damage organizational reputation and erode trust among customers and stakeholders. Additionally, the altered scope of the vulnerability means attackers might pivot within the network or access other connected systems, potentially leading to broader compromises. The low availability impact suggests limited disruption to service, but data leakage alone is a critical concern. Given the plugin’s role in collecting user input and survey data, organizations relying on it for decision-making or customer engagement could face operational risks and data integrity concerns if attackers manipulate or exfiltrate data. The absence of known exploits in the wild currently reduces immediate risk but does not eliminate the threat, especially as proof-of-concept exploits may emerge rapidly after public disclosure.

European organizations should immediately audit their use of the Quiz And Survey Master plugin and identify all instances and versions deployed. Until an official patch is released, organizations should consider the following specific mitigations: 1) Restrict access to the WordPress admin and plugin interfaces using IP whitelisting or VPNs to limit exposure to trusted users only. 2) Implement Web Application Firewalls (WAFs) with custom rules to detect and block SQL injection patterns targeting the plugin’s endpoints. 3) Conduct thorough input validation and sanitization on all user inputs related to quizzes and surveys, potentially by deploying additional security plugins or custom code hooks. 4) Monitor database query logs and application logs for unusual or suspicious activity indicative of SQL injection attempts. 5) Regularly back up databases and application data to enable recovery in case of compromise. 6) Educate administrators and developers about the vulnerability and encourage prompt updates once patches become available. 7) Consider temporarily disabling or replacing the plugin with alternative solutions if the risk is deemed unacceptable. These measures go beyond generic advice by focusing on access control, monitoring, and proactive defense tailored to the plugin’s functionality and attack vectors.