CVE-2026-27554 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/ajax/save_iodd_parameters 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 escalation path within networked devices, specifically targeting the administrative interface through the ajax save iod parameters endpoint. This vulnerability allows an attacker who possesses low-privileged remote access to execute arbitrary system commands with root-level permissions. The core of this issue lies in improper input validation and sanitization mechanisms within the backend processing logic that handles parameter saves for IODD objects. When user-supplied data is passed to this endpoint without adequate filtering, it can be interpreted as executable code by the underlying operating system or application framework. This type of flaw typically arises from concatenating unsanitized inputs directly into shell commands or system calls, a pattern frequently categorized under CWE-78 Improper Neutralization of Special Elements used in an OS Command.
From an operational perspective, the ability to execute commands as root fundamentally compromises the integrity and availability of the affected device. An attacker can manipulate system configurations, install persistent backdoors, exfiltrate sensitive data stored on the device, or use the compromised host as a pivot point for further attacks within the internal network. The severity is amplified by the fact that initial access requires only low-privileged credentials, which are often easier to obtain through phishing, credential stuffing, or exploitation of other less severe vulnerabilities. This aligns with ATT&CK technique T1059 Command and Scripting Interpreter, where adversaries use native tools like bash or PowerShell to execute malicious commands after gaining a foothold in the system.
The presence of this vulnerability indicates significant weaknesses in the software development lifecycle regarding secure coding practices. Developers may have assumed that low-privileged users would not attempt such attacks or failed to implement strict allow-listing for input parameters. In many industrial and IoT devices, IODD files define device capabilities and configurations; allowing unvalidated data into these configuration handlers creates a direct bridge between user interaction and system-level execution. This risk is particularly acute in environments where network segmentation is weak, as the compromise of one low-privileged node can lead to widespread disruption if that node holds critical infrastructure roles.
Mitigation strategies must focus on immediate remediation through code patches that enforce strict input validation. All parameters passed to the save iod parameters endpoint should be validated against a predefined set of allowed characters and values before being processed by any system-level functions. Parameterized queries or safe API calls should replace direct string concatenation when interacting with shell commands. Additionally, implementing principle of least privilege at the application level ensures that even if injection occurs, the resulting process runs with minimal permissions rather than root access. Network-level controls such as web application firewalls can provide temporary protection by detecting and blocking known command injection patterns until a permanent fix is deployed. Regular security audits and static code analysis tools should be integrated into development pipelines to prevent similar flaws from being introduced in future releases.