Overview
The CVE-2025-47637 vulnerability represents a critical security flaw in STAGGS software that could have severe repercussions for organizations worldwide. This vulnerability exploits an unrestricted file upload feature in STAGGS, potentially allowing malicious actors to upload a web shell to a web server, thereby gaining unauthorized access to the system. This blog post provides an in-depth analysis of this vulnerability, why it is essential for organizations to mitigate this risk, and how to do so effectively.
Vulnerability Summary
CVE ID: CVE-2025-47637
Severity: Critical (CVSS 10.0)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise and data leakage
Affected Products
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Product | Affected Versions
STAGGS | Up to 2.11.0
How the Exploit Works
The vulnerability exists due to an insufficient verification mechanism during the file upload process. Typically, an application should restrict the types of files that can be uploaded to prevent the upload of malicious files such as a web shell. However, in STAGGS, these restrictions are absent or improperly implemented, allowing an attacker to upload a web shell or similar malicious file. Once the web shell is uploaded, the attacker can execute arbitrary commands, potentially leading to full system control.
Conceptual Example Code
Below is a conceptual example of how the vulnerability might be exploited. The attacker sends a crafted HTTP request to upload a malicious web shell to the vulnerable server.
POST /upload/endpoint HTTP/1.1
Host: target.example.com
Content-Type: application/octet-stream
{ "file": "<base64 encoded web shell>" }Once the web shell is uploaded, it can be accessed by the attacker to execute arbitrary commands, potentially compromising the entire system.
Mitigation
Users of STAGGS software should apply the vendor-provided patch to fix this vulnerability as soon as possible. As a temporary mitigation, a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can be used to block or alert on attempts to exploit this vulnerability. However, these are not permanent solutions and should not replace the application of the vendor-supplied patch.