CVE-2025-53707: MedDream PACS Premium XSS Vulnerability

CVE-2025-53707 Overview

A reflected cross-site scripting (XSS) vulnerability exists in the modifyTranscript functionality of MedDream PACS Premium 7.3.6.870. This vulnerability allows an attacker to craft a malicious URL that, when visited by an authenticated user, can lead to arbitrary JavaScript code execution within the context of the victim's browser session. An attacker can provide a crafted URL to trigger this vulnerability, potentially compromising sensitive medical imaging data and user sessions.

Critical Impact

This XSS vulnerability in medical imaging software could allow attackers to steal session tokens, access patient data, or perform unauthorized actions on behalf of healthcare professionals accessing the PACS system.

Affected Products

• MedDream PACS Premium 7.3.6.870

Discovery Timeline

• 2026-01-20 - CVE-2025-53707 published to NVD
• 2026-01-20 - Last updated in NVD database

Technical Details for CVE-2025-53707

Vulnerability Analysis

This reflected XSS vulnerability (CWE-79) exists in the modifyTranscript functionality of MedDream PACS Premium. The vulnerability arises from improper neutralization of user-supplied input before it is included in web page output. When a user clicks on a specially crafted malicious URL, the unsanitized input is reflected back to the user's browser and executed as JavaScript code.

The attack requires user interaction, specifically requiring a victim to click on a malicious link. Once triggered, the injected script executes with the same privileges as the authenticated user, potentially allowing access to sensitive medical imaging data, session hijacking, or further attacks against the healthcare infrastructure.

Root Cause

The root cause of this vulnerability is insufficient input validation and output encoding in the modifyTranscript function. User-controlled parameters are not properly sanitized before being reflected in the HTTP response, allowing an attacker to inject malicious JavaScript code that executes in the victim's browser context.

Attack Vector

The attack is network-based and requires no authentication from the attacker. However, it does require user interaction—specifically, the victim must click on a malicious link crafted by the attacker. The attacker typically distributes these malicious URLs through phishing emails, malicious websites, or social engineering tactics targeting healthcare personnel who use the MedDream PACS system.

The vulnerability manifests in the modifyTranscript functionality where user input is reflected without proper sanitization. For detailed technical analysis, refer to the Talos Intelligence Vulnerability Report.

Detection Methods for CVE-2025-53707

Indicators of Compromise

• Suspicious URLs containing JavaScript payloads directed at the modifyTranscript endpoint
• Unusual HTTP requests to MedDream PACS containing encoded script tags or event handlers
• Web application firewall logs showing blocked XSS attempts targeting the PACS system
• User reports of unexpected browser behavior or redirects when accessing PACS functionality

Detection Strategies

• Deploy web application firewall (WAF) rules to detect and block common XSS payloads in URL parameters
• Implement Content Security Policy (CSP) headers to prevent inline script execution
• Monitor server access logs for requests containing suspicious characters or encoded payloads targeting the modifyTranscript endpoint
• Enable browser-based XSS protection mechanisms and monitor for triggered alerts

Monitoring Recommendations

• Enable detailed logging for all requests to the MedDream PACS application, particularly the modifyTranscript functionality
• Configure SIEM rules to alert on patterns consistent with XSS exploitation attempts
• Monitor for unusual session behavior that may indicate successful XSS-based session hijacking
• Review outbound network connections from client browsers for signs of data exfiltration

How to Mitigate CVE-2025-53707

Immediate Actions Required

• Review and restrict network access to the MedDream PACS system to only authorized users and networks
• Implement Content Security Policy (CSP) headers to mitigate the impact of XSS attacks
• Deploy web application firewall rules to filter malicious XSS payloads
• Educate users about the risks of clicking on untrusted links, especially those targeting the PACS system

Patch Information

Consult the Talos Intelligence Vulnerability Report for the latest patch information and vendor guidance. Contact MedDream support for official security updates addressing this vulnerability in PACS Premium.

Workarounds

• Implement strict Content Security Policy headers to prevent inline JavaScript execution
• Deploy a web application firewall with XSS protection rules in front of the MedDream PACS application
• Restrict access to the vulnerable modifyTranscript functionality to trusted internal networks only
• Enable HTTP-only and Secure flags on session cookies to reduce the impact of potential session theft

# Example CSP header configuration for Apache
# Add to httpd.conf or .htaccess
Header set Content-Security-Policy "default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'; img-src 'self' data:; frame-ancestors 'self';"

# Example for Nginx
# Add to nginx.conf within the server block
add_header Content-Security-Policy "default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'; img-src 'self' data:; frame-ancestors 'self';";