CVE-2025-52664 is an SQL injection vulnerability identified in Revive Adserver version 6.0.0, a widely used open-source ad serving platform. The flaw stems from insufficient sanitization of user-supplied input in certain functionalities accessible to authenticated users, allowing them to inject crafted SQL payloads. This vulnerability falls under CWE-89, indicating classic SQL injection issues where malicious input alters the intended SQL commands executed by the backend database. Exploitation requires the attacker to be logged in but does not require additional user interaction, making it relatively straightforward for insiders or compromised accounts to leverage. Successful exploitation can lead to unauthorized data disclosure, modification, or deletion, and can disrupt service availability by corrupting database integrity. The CVSS v3.0 score of 8.8 reflects the vulnerability’s network attack vector, low complexity, and high impact on confidentiality, integrity, and availability. No patches were linked at the time of publication, and no known exploits have been observed in the wild, but the vulnerability’s nature and severity suggest a high risk if left unmitigated. The vulnerability was reserved in June 2025 and published in late October 2025, indicating recent discovery and disclosure.

For European organizations, especially those relying on Revive Adserver 6.0.0 for digital advertising operations, this vulnerability poses significant risks. Exploitation could lead to unauthorized access to sensitive advertising campaign data, user information, and potentially customer data stored within the system. Data breaches could result in regulatory penalties under GDPR due to exposure of personal data. Integrity loss could disrupt ad delivery, causing financial losses and reputational damage. Availability impacts could interrupt advertising services, affecting revenue streams and client trust. The requirement for authenticated access somewhat limits external exploitation but increases risk from insider threats or compromised credentials. Given the critical role of digital advertising in many European economies, the disruption could have cascading effects on marketing operations and digital commerce. Organizations in sectors with high digital ad spend, such as media, retail, and telecommunications, are particularly vulnerable.

1. Immediately upgrade Revive Adserver to a patched version once it becomes available from the vendor. 2. Until a patch is released, restrict access to the ad server to trusted users and networks, enforcing strong authentication and monitoring for unusual login patterns. 3. Implement web application firewalls (WAFs) with custom rules to detect and block SQL injection attempts targeting known vulnerable endpoints. 4. Conduct thorough input validation and sanitization on all user inputs, especially those accessible to authenticated users. 5. Regularly audit database logs and application logs for suspicious queries or anomalies indicative of injection attempts. 6. Employ the principle of least privilege for database accounts used by the application to limit the impact of potential exploitation. 7. Educate administrators and users about the risks of credential compromise and enforce multi-factor authentication to reduce insider threat risks. 8. Prepare incident response plans specifically addressing potential data breaches or service disruptions stemming from this vulnerability.