CVE-2009-4665 in Cute Editor for ASP.NET
Summary
by MITRE
Directory traversal vulnerability in CuteSoft_Client/CuteEditor/Load.ashx in CuteSoft Components Cute Editor for ASP.NET allows remote attackers to read arbitrary files via a .. (dot dot) in the file parameter.
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Analysis
by VulDB Data Team • 05/01/2026
The CVE-2009-4665 vulnerability represents a critical directory traversal flaw within the CuteSoft Components Cute Editor for ASP.NET implementation. This vulnerability specifically affects the Load.ashx handler located in the CuteSoft_Client/CuteEditor/ directory structure, exposing a fundamental security weakness that allows remote attackers to access arbitrary files on the affected system. The vulnerability stems from insufficient input validation and sanitization of the file parameter, which permits attackers to manipulate file paths using directory traversal sequences such as .. (dot dot) to navigate outside the intended directory boundaries.
The technical exploitation of this vulnerability occurs through the manipulation of the file parameter in requests sent to the Load.ashx endpoint. When an attacker submits a request containing directory traversal sequences in the file parameter, the application fails to properly validate or sanitize these inputs, allowing the traversal to occur. This flaw enables attackers to access files that should be restricted, potentially including sensitive system files, configuration files, or other protected resources that reside outside the designated web root or application directories. The vulnerability is classified under CWE-22 as "Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')" which is a well-documented weakness in software security that affects numerous applications across different platforms.
The operational impact of this vulnerability is significant and multifaceted, as it can lead to unauthorized data access, information disclosure, and potentially further exploitation within the affected system. Attackers can leverage this vulnerability to read sensitive files such as database connection strings, application configuration files, user credentials, or even system-level files that could provide insights into the underlying infrastructure. The vulnerability's remote nature means that attackers do not require local system access or credentials to exploit it, making it particularly dangerous in web-facing applications. Additionally, this type of vulnerability can serve as a stepping stone for more advanced attacks, potentially leading to full system compromise or privilege escalation depending on the application's security posture and the files accessed.
Organizations affected by this vulnerability should implement immediate mitigations including input validation and sanitization of all user-supplied parameters, particularly those used in file operations. The recommended approach involves implementing strict path validation that ensures all file access requests remain within designated directories and reject any input containing directory traversal sequences. Security controls should also include proper access controls and privilege separation to minimize the impact of successful exploitation attempts. The vulnerability aligns with ATT&CK technique T1083 (File and Directory Discovery) and T1566 (Phishing with Malicious Attachments) as attackers may use such vulnerabilities to discover sensitive files or gain unauthorized access to system resources. Organizations should also consider implementing web application firewalls and security monitoring to detect and prevent exploitation attempts. Regular security assessments and code reviews focusing on file handling operations are essential to identify and remediate similar vulnerabilities in other components of the application stack.