Overview
The cybersecurity community has recently identified a significant privilege escalation vulnerability within the login.php functionality of MedDream PACS Premium version 7.3.3.840. This vulnerability, designated as CVE-2025-27724, allows attackers to gain elevated privileges within the system, potentially leading to system compromise or data leakage. Given the critical nature of medical imaging systems like MedDream PACS Premium in healthcare infrastructure, this vulnerability poses a serious threat to both the integrity of healthcare data and the continuity of essential medical services.
Vulnerability Summary
CVE ID: CVE-2025-27724
Severity: Critical (9.3 CVSS Score)
Attack Vector: File upload
Privileges Required: Low
User Interaction: Required
Impact: System compromise or data leakage
Affected Products
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Product | Affected Versions
MedDream PACS Premium | 7.3.3.840
How the Exploit Works
The exploit takes advantage of a lack of proper file validation mechanisms in the login.php functionality of the affected software. Leveraging this, an attacker can upload a specially crafted .php file that can lead to elevated capabilities. This malicious file, once uploaded, can be executed to gain higher privileges within the system. This ability to escalate privileges can lead to unauthorized access, potential system compromise, or data leakage.
Conceptual Example Code
Below is a conceptual example of how the vulnerability might be exploited. This hypothetical HTTP request includes a malicious payload in the form of a .php file which, upon execution, can enable the attacker to escalate their privileges:
POST /login.php HTTP/1.1
Host: target.example.com
Content-Type: multipart/form-data; boundary=----WebKitFormBoundary7MA4YWxkTrZu0gW
------WebKitFormBoundary7MA4YWxkTrZu0gW
Content-Disposition: form-data; name="file"; filename="malicious.php"
Content-Type: application/x-php
<?php
// malicious PHP code
?>
------WebKitFormBoundary7MA4YWxkTrZu0gW--Mitigation Guidance
To mitigate this vulnerability, users of MedDream PACS Premium are strongly advised to apply the vendor patch as soon as it becomes available. In case the patch is not immediately available, or if systems cannot be patched immediately, deploying a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can provide temporary mitigation by identifying and blocking attempts to exploit this vulnerability. Regularly updating and patching your systems is a critical part of maintaining cybersecurity hygiene.