CVE-2025-13592 is a remote code execution (RCE) vulnerability classified under CWE-94 (Improper Control of Generation of Code) found in the monetizemore Advanced Ads – Ad Manager & AdSense WordPress plugin. The vulnerability affects all plugin versions up to and including 2.0.14. It is triggered via the 'change-ad__content' shortcode parameter, which fails to properly sanitize or validate input before processing it as executable code. This flaw allows an attacker with authenticated access and editor-level or higher permissions to inject and execute arbitrary PHP code on the server hosting the WordPress site. Because WordPress editors typically have content management privileges, this expands the attack surface beyond administrators, increasing risk. The vulnerability does not require user interaction beyond authentication, and the attack vector is network-based, making remote exploitation feasible. The CVSS v3.1 base score of 7.2 reflects high impact on confidentiality, integrity, and availability, with low attack complexity but requiring high privileges. No patches or official fixes are currently linked, and no known exploits are reported in the wild, but the potential for severe damage is significant. The vulnerability could be leveraged to deploy web shells, pivot within networks, exfiltrate sensitive data, or disrupt services.

For European organizations, this vulnerability poses a substantial risk, particularly for those relying on WordPress sites integrated with monetizemore’s Advanced Ads plugin for digital advertising management. Successful exploitation could lead to full server compromise, enabling attackers to steal sensitive customer or business data, manipulate advertising content for fraud or misinformation, or disrupt website availability. Given the widespread use of WordPress across Europe and the importance of online advertising revenue streams, the impact could extend to financial losses, reputational damage, and regulatory penalties under GDPR if personal data is exposed. Organizations in sectors such as e-commerce, media, and digital marketing are especially vulnerable. The requirement for editor-level access means insider threats or compromised credentials could facilitate exploitation. Additionally, the lack of known public exploits suggests a window of opportunity for attackers to develop weaponized payloads before widespread mitigation occurs.

Immediate mitigation should focus on restricting editor-level permissions to trusted personnel only and monitoring for unusual shortcode usage or unexpected content changes in WordPress sites. Organizations should disable or remove the Advanced Ads plugin until a security patch is released. If removal is not feasible, applying Web Application Firewall (WAF) rules to detect and block suspicious shortcode parameters, especially those attempting code injection patterns, can reduce risk. Regularly auditing user accounts and enforcing strong authentication mechanisms, such as multi-factor authentication (MFA), will limit unauthorized access. Monitoring server logs for anomalies related to shortcode processing and PHP execution can help detect exploitation attempts early. Once a vendor patch is available, prompt application is critical. Additionally, backing up website data and server configurations ensures recovery capability in case of compromise. Security teams should also educate content editors about the risks of malicious shortcode inputs and maintain updated incident response plans tailored to web application attacks.