Overview
The cybersecurity community has recently identified a significant vulnerability, coded CVE-2025-49415, found in Fastw3b LLC’s FW Gallery. This vulnerability concerns an improper limitation of a pathname to a restricted directory, more commonly known as a ‘Path Traversal’ vulnerability. This issue presents a serious concern for those using FW Gallery versions up to and including 8.0.0. The implications of this vulnerability are severe, with the potential to compromise systems and lead to data leakage.
Vulnerability Summary
CVE ID: CVE-2025-49415
Severity: High (8.6 CVSS Score)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: System compromise and potential data leakage
Affected Products
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Product | Affected Versions
FW Gallery | Up to and including 8.0.0
How the Exploit Works
The exploit takes advantage of the ‘Path Traversal’ vulnerability in FW Gallery. An attacker can manipulate variables that reference files with ‘..’ sequences and its variations. This allows an attacker to traverse the file system to access files or directories that are outside of the restricted directory. By doing this, a malicious user can read, write, or execute files that they would not normally have access to, leading to potential system compromise and data leakage.
Conceptual Example Code
Below is a conceptual example of how the vulnerability might be exploited using a malicious HTTP request:
GET /fwgallery/files/../etc/passwd HTTP/1.1
Host: target.example.comThis hypothetical example would result in the attacker gaining access to the ‘/etc/passwd’ file on the host system, which contains user password hashes. This could potentially allow the attacker to crack these hashes, gaining unauthorized access to user accounts.
Mitigation
To mitigate this vulnerability, users are strongly advised to apply the vendor patch as soon as it becomes available. In the interim, the use of a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can provide temporary mitigation by blocking malicious network traffic patterns associated with the exploit. Regular monitoring of network traffic and system logs for suspicious activity is also recommended until the patch is applied.