CVE-2025-54252 is a stored Cross-Site Scripting (XSS) vulnerability affecting Adobe Experience Manager (AEM) versions 6.5.23.0 and earlier. This vulnerability arises from insufficient input sanitization in certain form fields, allowing a low-privileged attacker to inject malicious JavaScript code that is persistently stored and later executed in the context of users who visit the affected pages. The attack requires user interaction, specifically that a victim browses to a page containing the vulnerable form field where the malicious script is stored. Successful exploitation can lead to bypassing security controls within the application, potentially allowing attackers to steal session tokens, perform actions on behalf of users, or manipulate the application interface. The vulnerability has a CVSS 3.1 base score of 5.4, indicating a medium severity level. The vector details indicate that the attack can be performed remotely over the network (AV:N), requires low privileges (PR:L), and user interaction (UI:R), with a scope change (S:C) and limited impact on confidentiality and integrity but no impact on availability. No known exploits are currently reported in the wild, and no official patches have been linked yet. The vulnerability is classified under CWE-79, which is a common and well-understood web application security issue related to improper neutralization of input leading to script injection.

For European organizations using Adobe Experience Manager, this vulnerability poses a risk of client-side script injection that can compromise user sessions, steal sensitive information, or facilitate further attacks such as phishing or privilege escalation within the application. Given AEM's widespread use in enterprise content management and digital experience platforms, exploitation could impact the confidentiality and integrity of corporate data and user interactions. The requirement for user interaction limits the attack vector to scenarios where users visit compromised or maliciously crafted pages, but the persistent nature of stored XSS means that once injected, the malicious payload can affect multiple users over time. This can undermine trust in digital services, lead to data breaches, and cause regulatory compliance issues under GDPR if personal data is exposed or manipulated. The medium severity suggests that while the vulnerability is not critical, it still requires timely remediation to prevent exploitation, especially in sectors with high-value targets such as finance, government, and healthcare within Europe.

European organizations should prioritize the following mitigation steps: 1) Immediately audit and identify all instances of Adobe Experience Manager 6.5.23.0 or earlier in their environment. 2) Apply any available patches or updates from Adobe as soon as they are released; if no patch is available yet, implement temporary workarounds such as input validation and output encoding on the server side to neutralize potentially malicious input in vulnerable form fields. 3) Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in the browser context. 4) Conduct thorough security testing and code reviews focusing on input sanitization and output encoding for all user-controllable inputs. 5) Educate users about the risks of clicking on untrusted links and visiting unknown pages within the corporate environment. 6) Monitor web application logs and user activity for unusual behavior that could indicate exploitation attempts. 7) Consider deploying Web Application Firewalls (WAFs) with rules specifically designed to detect and block XSS payloads targeting AEM. These measures, combined, will reduce the attack surface and limit the potential impact until an official patch is applied.