CVE-2025-52671 is a vulnerability classified under CWE-209 (Information Exposure Through an Error Message) affecting Revive Adserver versions 5.5.2, 6.0.1, and earlier. The flaw arises from the application revealing debug information in SQL error messages that are accessible to non-administrative users. Specifically, when certain SQL errors occur, the system discloses detailed information about the software environment, including the exact versions of Revive Adserver, PHP, and the underlying database. This leakage of internal versioning and configuration details can facilitate targeted attacks by providing threat actors with valuable reconnaissance data to identify exploitable weaknesses or plan further attacks. The vulnerability requires only low privileges (non-admin user) and no user interaction, making it relatively easy to exploit remotely over the network. However, it does not directly impact the confidentiality, integrity, or availability of data beyond information disclosure. No patches or fixes are currently linked in the provided data, and no known exploits have been reported in the wild as of the publication date (November 20, 2025). The vulnerability's CVSS 3.0 score is 4.3 (medium severity), reflecting its limited impact but ease of exploitation and potential to aid attackers in subsequent attacks.

For European organizations, especially those relying on Revive Adserver for digital advertising and campaign management, this vulnerability poses a risk of information leakage that can be leveraged for more sophisticated attacks. Disclosure of software, PHP, and database versions can enable attackers to identify unpatched components or known vulnerabilities in the environment, increasing the likelihood of successful exploitation of other weaknesses. While the vulnerability itself does not allow direct data theft or service disruption, it lowers the barrier for attackers conducting reconnaissance. This can be particularly impactful for organizations in sectors with high-value advertising data or those targeted by advanced persistent threats. Additionally, regulatory frameworks such as GDPR emphasize minimizing data exposure, and even indirect information leakage could raise compliance concerns. Organizations operating in competitive digital markets may also face reputational risks if such vulnerabilities are exploited.

To mitigate CVE-2025-52671, organizations should first verify if they are running affected versions of Revive Adserver (5.5.2, 6.0.1, or earlier). Immediate steps include: 1) Applying any available patches or updates from the vendor once released; 2) If patches are not yet available, configure the application and database to suppress detailed error messages and stack traces from being displayed to non-admin users; 3) Implement strict access controls to limit non-admin user capabilities and monitor for unusual access patterns; 4) Employ web application firewalls (WAFs) to detect and block attempts to trigger SQL errors or reconnaissance activities; 5) Conduct regular security audits and vulnerability scans focusing on information disclosure issues; 6) Harden PHP and database configurations to minimize verbose error reporting; 7) Educate administrators and developers on secure error handling practices to avoid exposing sensitive debug data; 8) Monitor threat intelligence feeds for updates on exploit availability and vendor advisories. These measures reduce the risk of information leakage and subsequent exploitation.