CVE-2025-57787 Overview
A reflected cross-site scripting (XSS) vulnerability exists in the modifyRoute functionality of MedDream PACS Premium 7.3.6.870. This vulnerability allows attackers to execute arbitrary JavaScript code in the context of a victim's browser session by crafting a malicious URL. When a user clicks on the specially crafted link, the malicious script is reflected back from the server and executed in the victim's browser, potentially leading to session hijacking, credential theft, or other client-side attacks.
Critical Impact
Attackers can steal session tokens, capture user credentials, perform actions on behalf of authenticated users, or redirect victims to malicious websites by exploiting this XSS vulnerability in healthcare imaging systems.
Affected Products
- MedDream PACS Premium 7.3.6.870
Discovery Timeline
- 2026-01-20 - CVE CVE-2025-57787 published to NVD
- 2026-01-20 - Last updated in NVD database
Technical Details for CVE-2025-57787
Vulnerability Analysis
This reflected XSS vulnerability (CWE-79) resides in the modifyRoute functionality of MedDream PACS Premium, a Picture Archiving and Communication System used in healthcare environments for managing medical imaging data. The vulnerability requires user interaction—specifically, a victim must click on a crafted malicious URL for the attack to succeed.
When exploited, the attacker-controlled JavaScript code executes within the security context of the vulnerable application, gaining access to the user's session cookies, authentication tokens, and the ability to perform actions on behalf of the authenticated user. In a healthcare environment, this could potentially expose sensitive patient data or allow unauthorized access to medical imaging systems.
The vulnerability was identified and reported by Cisco Talos. For complete technical details, refer to the Talos Intelligence Vulnerability Report.
Root Cause
The root cause of this vulnerability is improper input validation and output encoding in the modifyRoute functionality. User-supplied input is reflected back in the HTTP response without adequate sanitization or encoding, allowing malicious script content to be injected and executed in the browser. The application fails to properly escape special characters that have meaning in HTML/JavaScript contexts before including user input in the response.
Attack Vector
The attack is network-based and requires no privileges on the target system, but does require user interaction. An attacker must craft a malicious URL containing JavaScript payload and convince a victim to click on it through social engineering techniques such as phishing emails or malicious links embedded in other web content.
The attack flow typically involves:
- Attacker identifies the vulnerable modifyRoute endpoint
- Attacker crafts a URL containing malicious JavaScript in a vulnerable parameter
- Attacker distributes the malicious URL to potential victims via email, social media, or other channels
- Victim clicks the link while authenticated to the MedDream PACS system
- The server reflects the malicious script in the response without sanitization
- Victim's browser executes the attacker's JavaScript code in the context of the trusted application
Detection Methods for CVE-2025-57787
Indicators of Compromise
- Suspicious URLs containing encoded script tags or JavaScript event handlers targeting MedDream PACS endpoints
- Unusual requests to the modifyRoute functionality with malformed or script-containing parameters
- Web server logs showing requests with <script>, javascript:, or encoded equivalents in query strings
- Reports from users about unexpected behavior after clicking links related to the PACS system
Detection Strategies
- Implement Web Application Firewall (WAF) rules to detect and block common XSS payload patterns in requests to MedDream PACS
- Enable detailed logging of all HTTP requests to the modifyRoute endpoint and monitor for suspicious patterns
- Deploy browser-based security controls such as Content Security Policy (CSP) headers to mitigate script execution
- Configure IDS/IPS signatures to detect XSS attack patterns targeting medical imaging systems
Monitoring Recommendations
- Monitor web server access logs for requests containing encoded characters commonly used in XSS attacks (e.g., %3Cscript%3E, %22%3E%3Cscript%3E)
- Set up alerts for unusual patterns of access to the modifyRoute functionality
- Review authentication logs for session anomalies that might indicate successful XSS-based session hijacking
- Implement security information and event management (SIEM) correlation rules for detecting XSS exploitation attempts
How to Mitigate CVE-2025-57787
Immediate Actions Required
- Review the Talos Intelligence Vulnerability Report for vendor-specific remediation guidance
- Implement network-level access controls to restrict access to MedDream PACS to authorized users only
- Consider placing the MedDream PACS application behind a Web Application Firewall with XSS filtering enabled
- Educate users about the risks of clicking on suspicious links, particularly those related to the PACS system
Patch Information
Organizations should consult the Talos Intelligence Vulnerability Report for information about available patches or updated versions from the vendor. Contact MedDream support directly for specific patch availability and upgrade procedures for PACS Premium installations.
Workarounds
- Deploy a Web Application Firewall (WAF) configured to filter XSS payloads on all traffic to the MedDream PACS application
- Implement strict Content Security Policy (CSP) headers to prevent inline script execution
- Restrict network access to the MedDream PACS system to trusted internal networks or require VPN access
- Consider disabling or restricting access to the modifyRoute functionality if it is not operationally required
# Example Content Security Policy header configuration for Apache
# Add to httpd.conf or .htaccess for MedDream PACS virtual host
Header set Content-Security-Policy "default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'; img-src 'self' data:; frame-ancestors 'self';"
Header set X-XSS-Protection "1; mode=block"
Header set X-Content-Type-Options "nosniff"
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
