CVE-2026-105275 in Netco Design
Summary
by MITRE • 10/09/2026
Satel Netco Design versions prior to v2.1.7 contains a relative path traversal vulnerability in its data import functionality. An authenticated user with Viewer privileges could access file paths outside the intended directory and use observable application responses to determine whether files exist on the host system.
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Analysis
by VulDB Data Team • 10/09/2026
The vulnerability identified in Satel Netco Design versions prior to v2.1.7 represents a classic relative path traversal flaw within the software's data import module. This type of security defect arises when an application fails to properly sanitize or validate user-supplied input that specifies file paths, allowing attackers to manipulate references to files located outside the intended directory structure. In this specific instance, the vulnerability is triggered through the data import functionality, which likely accepts filenames or path components from authenticated users without adequate boundary checks. By constructing a malicious request containing sequences such as dot-dot-slash (../), an attacker can navigate up the file system hierarchy, bypassing the application's logical sandbox and accessing sensitive files stored in directories that were not intended for public or user-level access.
The operational impact of this vulnerability is significantly influenced by the authentication requirements associated with exploiting it. The flaw requires an authenticated user possessing at least Viewer privileges to execute. This constraint means that while the attack surface is limited compared to unauthenticated remote code execution vulnerabilities, it remains a serious concern in environments where insider threats or compromised low-privilege accounts are possible. Once exploited, the vulnerability allows for directory traversal and file existence determination. The attacker can use observable application responses, such as differences in HTTP status codes, error messages, or response times, to perform an information disclosure attack known as blind path traversal. This technique enables the enumeration of files on the host system without necessarily downloading their contents immediately, which serves as a reconnaissance phase for further attacks.
From a technical classification perspective, this vulnerability aligns with CWE-22: Improper Limitation of a Pathname to a Restricted Directory. The core failure lies in the application's logic not restricting file access operations strictly within the designated import directory. Furthermore, the ability to determine whether files exist based on observable responses maps closely to CWE-209: Generation of Error Message Containing Sensitive Information if error handling is poorly implemented, or more broadly to information leakage mechanisms that aid in system mapping. In terms of offensive security frameworks, this activity corresponds to ATT&CK technique T1083: File and Directory Discovery, where adversaries seek to gather knowledge about the target environment's file structure to identify valuable targets for subsequent exploitation stages such as data exfiltration or privilege escalation.
The mitigation strategy must focus on both immediate remediation and long-term defensive coding practices. The primary solution is to upgrade Satel Netco Design to version 2.1.7 or later, where the vendor has presumably implemented proper input validation and path canonicalization checks. For systems that cannot be immediately updated, administrative controls should restrict Viewer privileges to only those users who absolutely require access to the data import feature. Additionally, implementing a web application firewall with rules specifically designed to detect and block relative path traversal patterns can provide an additional layer of defense. Developers must ensure that all file operations use absolute paths derived from validated inputs and verify that the resolved canonical path remains within the expected directory boundary before performing any read or write operations.