Overview
In this blog post, we will take a deep dive into the recently identified CVE-2025-46384 vulnerability, a critical security flaw that poses significant threats to digital infrastructures. This vulnerability, defined as CWE-434 Unrestricted Upload of File with Dangerous Type, affects a wide array of systems and applications, potentially leading to system compromise or data leakage. With its high CVSS Severity Score of 8.8, it’s crucial for system administrators, security officers, and all stakeholders to understand this vulnerability and how to mitigate it effectively.
Vulnerability Summary
CVE ID: CVE-2025-46384
Severity: Critical – CVSS score 8.8
Attack Vector: Network
Privileges Required: None
User Interaction: Required
Impact: System compromise or data leakage
Affected Products
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Product | Affected Versions
[Product 1] | [Version 1.0 – 2.0]
[Product 2] | [Version 3.0 – 4.0]
How the Exploit Works
The CVE-2025-46384 vulnerability is based on the unrestricted upload of files with dangerous types. These types of files can include scripts or executables that are capable of running commands or code on the server. When an attacker successfully uploads such a file, they can trigger the execution of the file, leading to unauthorized actions such as data theft, system compromise, or other harmful activities.
Conceptual Example Code
Here’s a conceptual example of how the vulnerability might be exploited. This is a mock HTTP POST request that uploads a malicious file:
POST /upload_endpoint HTTP/1.1
Host: target.example.com
Content-Type: multipart/form-data; boundary=----WebKitFormBoundary7MA4YWxkTrZu0gW
------WebKitFormBoundary7MA4YWxkTrZu0gW
Content-Disposition: form-data; name="file"; filename="malicious_script.sh"
Content-Type: application/x-sh
echo 'Malicious command or script content here'
------WebKitFormBoundary7MA4YWxkTrZu0gWWhen the server processes this request, it could potentially execute the uploaded file, leading to the unwanted outcomes outlined above.
Mitigation Guidance
To mitigate this vulnerability, the most effective solution is to apply the vendor-provided patch as soon as it becomes available. Until then, employing a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can offer temporary mitigation by inspecting and controlling the types of files that can be uploaded to the system. It’s also recommended to enforce strict file type validation and to disable the execution of scripts or code from uploaded files.