CVE-2026-27549 in ICE2-8IOL1-G65L-V1D
Summary
by MITRE • 09/16/2026
A low-privileged remote attacker can exploit a command injection vulnerability in the /index.php/attached_devices_tab/do_upload endpoint using operator credentials allowing execution of commands with root privileges on the device.
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Analysis
by VulDB Data Team • 09/16/2026
The identified security flaw represents a critical severity issue within the web application interface, specifically targeting the attached devices tab upload functionality located at the path index.php/attached_devices_tab/do_upload. This vulnerability is classified as a command injection weakness, which fundamentally stems from insufficient sanitization or validation of user-supplied input before it is passed to system-level commands for execution. In this specific instance, the application fails to properly neutralize special characters that could alter the intended structure of backend shell operations, allowing an attacker to inject arbitrary operating system commands into the processing pipeline. The severity of this flaw is significantly amplified by its accessibility; unlike many command injection vulnerabilities that require administrative privileges or physical access, this particular endpoint can be exploited by a low-privileged remote attacker who possesses only operator-level credentials. This means that any user with basic operational access to the device's management interface can leverage this weakness without needing to escalate their account permissions first, thereby lowering the barrier for entry significantly and increasing the likelihood of exploitation in environments where default or standard operator accounts are commonly used.
From a technical perspective, the vulnerability likely arises because the do_upload endpoint processes file uploads by invoking underlying system utilities or scripts that handle device attachment logic. When an attacker crafts a malicious filename or payload within the upload request, these special characters bypass input validation checks and are interpreted as executable commands rather than literal data strings. Because the backend process handling this upload appears to run with elevated privileges, potentially root access, the injected commands inherit this high level of authority. This architectural design decision creates a direct path for privilege escalation from a low-privileged user context to full system control. The attacker can manipulate standard input vectors such as filename fields or metadata associated with the uploaded device profile to execute arbitrary shell commands, effectively turning a file upload feature into a remote code execution vector.
The operational impact of this vulnerability is severe and comprehensive. Once an attacker successfully executes commands via this injection point, they gain complete control over the affected device at the root level. This allows for the exfiltration of sensitive configuration data, including network credentials, encryption keys, and proprietary system information that may be stored in accessible directories. Furthermore, a compromised device can serve as a pivot point within the internal network infrastructure, enabling lateral movement to other connected systems or critical assets. The attacker could also install persistent backdoors, modify firmware images, or disrupt service availability by terminating essential processes. In industrial control systems or IoT deployments where such devices are common, this level of compromise can lead to physical safety risks and significant operational downtime due to the inability to trust device integrity or network boundaries.
To mitigate this risk, immediate remediation efforts should focus on implementing strict input validation and output encoding for all data processed by the do_upload endpoint. Developers must ensure that any user-supplied input is validated against a whitelist of allowed characters rather than relying solely on blacklist approaches which are prone to bypass techniques. Additionally, applying the principle of least privilege is crucial; the backend processes handling file uploads should operate with minimal necessary permissions, avoiding root or administrator rights whenever possible. If elevated privileges are strictly required for specific system operations, these actions should be isolated in separate services that do not directly process untrusted user input. Implementing robust logging and monitoring mechanisms will also aid in detecting exploitation attempts by flagging anomalous command patterns originating from operator accounts. Regular security assessments and code reviews focusing on injection vulnerabilities are recommended to prevent similar flaws in other endpoints.
This vulnerability aligns with Common Weakness Enumeration identifier CWE-78, which covers Improper Neutralization of Special Elements used in an OS Command commonly known as OS Command Injection. It also maps directly to the MITRE ATT&CK framework technique T1059, specifically sub-technique 004 for Command and Scripting Interpreter abuse, where attackers use system utilities like bash or cmd.exe to execute malicious commands remotely. Understanding these classifications helps in benchmarking the severity against industry standards and ensures that mitigation strategies address both the immediate technical flaw and the broader architectural implications of privilege escalation through web interfaces.