CVE-2026-27558 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/ajax_remove_uploaded_iodd_files 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 privilege escalation vector within the web interface of the affected system, specifically targeting the ajax_remove_uploaded_iodd_files endpoint located at /index.php/attached_devices_tab/. This vulnerability stems from improper neutralization of special elements used in operating system commands, commonly categorized under CWE-78. The core technical deficiency lies in the application's failure to adequately sanitize or validate user-supplied input before it is passed to underlying shell commands for processing file removal operations. By injecting malicious command sequences into this specific endpoint, an attacker can bypass intended functional constraints and inject arbitrary operating system instructions that are executed with elevated privileges.
The operational impact of this vulnerability is severe due to the privilege level at which the injected commands execute. Although the initial access requires only low-privileged remote credentials or operator-level authentication, the resulting command execution occurs with root privileges on the device. This discrepancy between user role and effective system permission allows an attacker to gain complete control over the underlying operating environment. Once root access is achieved, the attacker can modify system configurations, install persistent backdoors, exfiltrate sensitive data, pivot to other network segments, or disrupt critical services running on the host machine. The ability to execute commands as root effectively negates any security benefits provided by the initial low-privilege authentication requirement.
From a threat actor perspective, this vulnerability aligns with techniques observed in advanced persistent threats and automated exploitation campaigns targeting industrial control systems and embedded devices. It maps directly to MITRE ATT&CK technique T1059 Command and Scripting Interpreter, specifically regarding the use of shell commands for remote execution. Furthermore, it relates to privilege escalation vectors where attackers leverage application logic flaws to move from a lower trust boundary to a higher one without requiring additional credential theft or exploitation of separate kernel vulnerabilities. The specific targeting of file management endpoints suggests that attackers may exploit this during phases involving data staging or cleanup after initial compromise.
Mitigation strategies must address both the immediate technical flaw and broader architectural security postures. Immediate remediation involves implementing strict input validation and parameterization for all shell command invocations within the application code. Developers should avoid passing unsanitized user input directly to system calls such as exec, system, or popen in PHP environments. Instead, they should use language-specific functions that handle argument separation safely, ensuring that special characters are treated as data rather than executable syntax. Additionally, implementing a whitelist approach for allowed file names and paths can further reduce the attack surface by rejecting any input containing unexpected characters like semicolons, ampersands, or pipe symbols.
Beyond code-level fixes, defense-in-depth measures should be employed to limit the blast radius of such vulnerabilities. The web application service running this endpoint should operate under a restricted user account with minimal permissions, adhering to the principle of least privilege. Even if command injection occurs, restricting the effective privileges of the web server process can prevent root-level compromise. Network segmentation is also critical; the management interface hosting these endpoints should be isolated from general corporate or public networks and accessible only through secure, authenticated channels such as VPNs with multi-factor authentication. Regular security audits and static application security testing focused on command injection patterns are essential to detect similar flaws in other parts of the codebase before they can be exploited by adversaries.