CVE-2026-82766 in SGA1000
Summary
by MITRE • 09/14/2026
Improper neutralization of special elements used in an OS command ('OS Command Injection') issue exists in SGA1000. If this vulnerability is exploited, an arbitrary OS command may be executed by an attacker who can log in to the product.
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Analysis
by VulDB Data Team • 09/14/2026
The identified vulnerability represents a classic instance of improper neutralization of special elements used in an operating system command, commonly referred to as OS Command Injection or CWE-78. This flaw resides within the SGA1000 device and stems from insufficient validation or sanitization of user-supplied input before it is passed to underlying system commands for execution. When a software component constructs dynamic shell commands by concatenating unsanitized data with static command strings, it creates an opportunity for attackers to manipulate the intended logic of the application. In this specific context, the vulnerability allows an attacker who has already authenticated to the product to inject malicious syntax into input fields that are subsequently processed by the operating system's command interpreter.
The operational impact of this vulnerability is severe due to its potential for arbitrary code execution with the privileges of the vulnerable process. Although exploitation requires prior authentication, which acts as a partial mitigation against remote unauthenticated attacks, it does not eliminate the risk entirely. An authenticated attacker could leverage their access level to execute system-level commands, potentially leading to complete compromise of the device's confidentiality, integrity, and availability. This might involve reading sensitive configuration files, modifying security policies, installing backdoors, or using the compromised SGA1000 as a pivot point for further attacks against other systems on the network. The severity is particularly high if the application runs with elevated privileges such as root or administrator rights, which is common in many embedded and networking devices to facilitate system management tasks.
From an offensive security perspective, this vulnerability aligns closely with the MITRE ATT&CK framework technique T1059, specifically sub-techniques related command and scripting interpreter abuse. Attackers would likely utilize input vectors such as web forms, API endpoints, or configuration interfaces that accept user data for processing. The exploitation typically involves injecting shell metacharacters like semicolons, ampersands, pipes, or backticks to break out of the intended context and append additional commands. For example, an attacker might inject a command sequence that executes a reverse shell or downloads malicious payloads from a remote server, thereby establishing persistent access without detection by standard application-level logging mechanisms.
Mitigation strategies must focus on strict input validation and secure coding practices. Developers should implement allow-listing for all user inputs to ensure only expected characters and formats are accepted. If dynamic command execution is unavoidable, it is critical to avoid passing unsanitized strings directly to shell interpreters like /bin/sh or cmd.exe. Instead, applications should use API functions that execute commands without invoking a shell, such as execve on Unix-like systems or CreateProcess on Windows, where arguments are passed as distinct parameters rather than concatenated into a single string. Additionally, applying the principle of least privilege is essential; the application process should run with minimal necessary permissions to limit the damage if an injection occurs. Regular security code reviews and static analysis tools configured to detect CWE-78 patterns can also help identify and remediate such flaws before deployment.