Description

Insecure file operations in the API of HPE Networking Fabric Composer could allow an authenticated remote attacker to achieve remote code execution. Successful exploitation could allow an attacker to execute arbitrary commands as a privileged user on the underlying operating system.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "7.2",
  "pubDate": "2026-09-01T20:17:19.513Z",
  "pubdate": "2026-09-01T20:17:19.513Z",
  "executiveSummary": "HPE Networking Fabric Composer is susceptible to a critical remote code execution (RCE) vulnerability stemming from insecure file operations within its API architecture.\nThe vulnerability allows an authenticated remote attacker to bypass intended security controls and execute arbitrary commands with elevated, privileged-level permissions on the host operating system.\nThis flaw presents a significant security risk, as successful exploitation results in full system compromise, enabling the attacker to manipulate sensitive data, modify system configurations, or deploy persistent malware.\nExploitation requires an authenticated session, though the scope of the vulnerability indicates a failure in input validation or path sanitization processes during API-led file handling operations.\nGiven that the execution occurs with privileged system rights, this vulnerability should be prioritized for immediate remediation to prevent unauthorized administrative control over the underlying fabric management infrastructure.",
  "technicalDetails": "The vulnerability originates from improper handling of user-supplied input during API-based file operations in HPE Networking Fabric Composer. Specifically, the application fails to adequately sanitize or validate file paths and filenames passed through its interface, leading to insecure file processing logic.\nThe root cause lies in a breakdown of secure coding practices surrounding filesystem interactions. When the API processes requests involving file creation, modification, or movement, the application logic does not sufficiently enforce constraints on the target directory or the file type. This lack of rigorous path validation allows an attacker to perform unauthorized file operations, including the potential for arbitrary file write or overwrite scenarios.\nAn authenticated attacker can leverage this weakness by crafting malicious API payloads that manipulate file path parameters. By bypassing directory restrictions, an attacker can write executable scripts or configuration files into sensitive locations within the host operating system's filesystem—such as binary directories, cron job directories, or service startup configurations.\nThe exploitation flow generally follows these steps: 1) The attacker authenticates to the Fabric Composer API using valid credentials. 2) The attacker identifies an API endpoint responsible for file uploads or state management that lacks proper path canonicalization or sanitization. 3) The attacker submits a request containing a crafted path or file payload designed to be saved in a location that the operating system executes or interprets. 4) The API performs an insecure write operation, placing the malicious code into a high-privilege execution context. 5) Once the file is written, the attacker triggers the execution—either through automated system scheduling or by interacting with the associated service—resulting in code execution under the security context of the privileged user running the Fabric Composer service.\nPost-exploitation impact is severe, as the attacker effectively gains full control over the underlying OS. Because the service typically operates with high privileges to manage network fabric components, the attacker can move laterally within the network, intercept management traffic, or exfiltrate sensitive configuration data. This level of access bypasses the logical isolation usually provided by the application layer, turning a functional flaw into a total system-level compromise."
}