CVE-2025-64548 is a stored Cross-Site Scripting (XSS) vulnerability identified in Adobe Experience Manager (AEM) versions 6.5.23 and earlier. This vulnerability allows a low privileged attacker to inject malicious JavaScript code into vulnerable form fields within the AEM-managed web application. When a victim user accesses the affected page containing the injected script, the malicious code executes in their browser context. The attack vector is network-based, with low attack complexity, requiring the attacker to have some privileges and user interaction for the payload to execute. The vulnerability impacts confidentiality and integrity by potentially enabling session hijacking, credential theft, or unauthorized actions performed on behalf of the victim user. The scope is changed (S:C) because the vulnerability affects resources beyond the attacker’s privileges once exploited. The CVSS 3.1 base score is 5.4, indicating medium severity. No patches are currently linked, and no known exploits are reported in the wild as of publication. The vulnerability stems from insufficient input sanitization and output encoding in form fields, a common weakness categorized under CWE-79. Adobe Experience Manager is widely used by enterprises and public sector organizations for content management, making this vulnerability significant for organizations relying on AEM for their web presence. Attackers exploiting this flaw could compromise user sessions and gain unauthorized access to sensitive information or perform actions with victim user privileges. The vulnerability requires user interaction (UI:R), meaning the victim must visit the maliciously crafted page for exploitation. The attacker must have low privileges (PR:L), which lowers the barrier to exploitation compared to vulnerabilities requiring higher privileges. The vulnerability does not affect availability directly but can cause reputational damage and data breaches. Given the widespread use of AEM in Europe, especially in government and large enterprises, this vulnerability poses a tangible risk to European organizations. Mitigation is complicated by the lack of an immediate patch but can be addressed by implementing robust input validation, output encoding, and Content Security Policies to restrict script execution. Monitoring and incident response readiness are also critical to detect and respond to exploitation attempts.

For European organizations, the impact of CVE-2025-64548 can be significant, particularly for those using Adobe Experience Manager to manage public-facing websites or intranet portals. Successful exploitation can lead to theft of session cookies, enabling attackers to impersonate legitimate users and access sensitive information or perform unauthorized actions. This can result in data breaches, loss of customer trust, and regulatory penalties under GDPR if personal data is compromised. The integrity of web content and user interactions can be undermined, potentially allowing attackers to inject misleading or malicious content. Although availability is not directly impacted, the reputational damage and potential downtime for remediation can be costly. Organizations in sectors such as government, finance, healthcare, and media, which rely heavily on AEM, are at higher risk. The requirement for low privileges and user interaction lowers the exploitation barrier, increasing the likelihood of targeted attacks or phishing campaigns leveraging this vulnerability. The medium severity rating indicates that while the vulnerability is not critical, it still poses a meaningful threat that must be addressed promptly to avoid exploitation and downstream impacts.

1. Apply official Adobe patches and updates as soon as they become available to address CVE-2025-64548. 2. Implement strict input validation and output encoding on all form fields to prevent injection of malicious scripts. 3. Deploy Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts and reduce the impact of XSS attacks. 4. Limit user privileges to the minimum necessary to reduce the attack surface, especially for users who can submit data to vulnerable forms. 5. Conduct regular security assessments and penetration testing focused on web application vulnerabilities, including XSS. 6. Monitor web traffic and logs for unusual activity indicative of exploitation attempts, such as unexpected script injections or anomalous user behavior. 7. Educate users about the risks of clicking on suspicious links or interacting with untrusted content to reduce the chance of successful exploitation. 8. Use web application firewalls (WAFs) with rules designed to detect and block XSS payloads targeting AEM. 9. Review and harden AEM configurations to disable or restrict features that allow untrusted input where possible. 10. Prepare incident response plans to quickly contain and remediate any exploitation events involving this vulnerability.