CVE-2025-54252 is a stored Cross-Site Scripting (XSS) vulnerability identified in Adobe Experience Manager (AEM) versions 6.5.23.0 and earlier. This vulnerability allows a low-privileged attacker to inject malicious scripts into vulnerable form fields within the application. Stored XSS means that the malicious payload is saved on the server and served to users who access the affected page, potentially allowing the attacker to execute arbitrary JavaScript in the context of the victim's browser. Exploitation requires user interaction, specifically that a victim visits a page containing the injected malicious script. The vulnerability can be leveraged to bypass security features within AEM, potentially leading to unauthorized actions such as session hijacking, defacement, or further exploitation of the application. The CVSS v3.1 base score is 5.4 (medium severity), reflecting that the attack vector is network-based, requires low privileges, and user interaction, with limited impact on confidentiality and integrity, and no impact on availability. No known exploits are currently reported in the wild, and no patches have been linked yet. The vulnerability is categorized under CWE-79, which covers improper neutralization of input leading to XSS.

For European organizations using Adobe Experience Manager, this vulnerability poses a moderate risk. AEM is widely used by enterprises and public sector organizations for content management and digital experience delivery. Exploitation could allow attackers to execute malicious scripts in the browsers of users, potentially leading to session hijacking, theft of sensitive information, or manipulation of web content. This could damage organizational reputation, lead to data breaches, or facilitate further attacks within the network. Public sector entities and large enterprises with high web traffic are particularly at risk due to the potential scale of impact. The requirement for user interaction somewhat limits the risk but does not eliminate it, especially in environments where users may be less security-aware. Additionally, the ability to bypass security features within AEM could enable attackers to escalate privileges or perform unauthorized actions, increasing the threat level.

European organizations should prioritize the following specific actions: 1) Immediately audit their Adobe Experience Manager installations to identify affected versions (6.5.23.0 and earlier). 2) Monitor Adobe's official channels for patches or security advisories related to CVE-2025-54252 and apply updates promptly once available. 3) Implement strict input validation and output encoding on all form fields within AEM to prevent injection of malicious scripts. 4) Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers. 5) Conduct user awareness training to reduce the risk of users interacting with malicious content. 6) Review and harden AEM security configurations, including restricting low-privileged user capabilities to limit the attack surface. 7) Use web application firewalls (WAFs) with rules tuned to detect and block XSS payloads targeting AEM. 8) Regularly scan web applications for XSS vulnerabilities using automated tools and penetration testing.