CVE-2026-27550 in ICE2-8IOL1-G65L-V1D
Summary
by MITRE • 09/16/2026
A low-privileged remote attacker can exploit a command injection vulnerability in the Field_Shadow_Password class 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 disclosed security flaw represents a critical privilege escalation vector within network infrastructure devices, specifically targeting the Field_Shadow_Password class. This vulnerability allows an attacker who possesses only low-privileged remote access to execute arbitrary operating system commands with root-level permissions. The core of this issue lies in improper input validation and sanitization mechanisms when processing password-related operations or shadow file interactions managed by the specified software component. By injecting malicious command sequences into fields intended for standard alphanumeric passwords, a remote adversary can bypass existing authentication controls and inject shell metacharacters that are subsequently interpreted by the underlying system interpreter without adequate escaping or filtering.
From a technical perspective, this is a classic example of OS Command Injection, categorized under CWE-78 in the Common Weakness Enumeration taxonomy. The vulnerability arises because the application constructs operating system commands using user-supplied input as part of the command string but fails to neutralize special characters that could alter the intended command structure. In many embedded systems and network devices, such classes handle sensitive authentication data or configuration updates. When these inputs are passed directly to a shell execution function without rigorous validation against a whitelist of allowed characters, an attacker can terminate the original argument and append new commands. This often leverages standard shell operators like semicolons, ampersands, or pipes to chain multiple malicious actions together.
The operational impact of this vulnerability is severe due to the resulting elevation of privilege from low-privileged user context to root access. Root privileges grant unrestricted control over the device, enabling the attacker to modify system configurations, install persistent backdoors, exfiltrate sensitive data such as cryptographic keys or customer information, and pivot into other segments of the internal network. This effectively compromises the integrity, confidentiality, and availability of the entire infrastructure protected by the affected device. In industrial control systems or critical telecommunications equipment, such a breach could lead to significant physical disruptions or widespread service outages.
This attack pattern aligns with several techniques documented in the MITRE ATT&CK framework for both enterprise and IoT/OT environments. Specifically, it corresponds to T1059 Command and Scripting Interpreter, where attackers use system utilities like sh or bash to execute commands remotely. Furthermore, because the initial access requires only low-privileged credentials, this facilitates lateral movement strategies such as T1078 Valid Accounts, allowing adversaries to move from a compromised user account to full administrative control without needing complex exploitation chains for privilege escalation binaries.
Mitigation efforts must focus on immediate remediation of the source code within the Field_Shadow_Password class and broader input validation practices across all remote-facing interfaces. Developers should implement strict allow-listing for any data passed to system commands, ensuring that only expected alphanumeric characters are accepted while rejecting or encoding special shell metacharacters. Utilizing parameterized APIs instead of string concatenation for command execution can also prevent injection attacks. Additionally, deploying the principle of least privilege by running application services with minimal necessary permissions reduces the impact even if an injection occurs. Regular security audits and static code analysis tools configured to detect CWE-78 patterns are essential for preventing similar vulnerabilities in future releases.