Description

A vulnerability in the API of HPE Networking Fabric Composer could allow an unauthenticated remote attacker to run arbitrary commands on the underlying host if certain preconditions outside of the attacker's control are met. Successful exploitation of this vulnerability could allow an attacker to execute arbitrary commands on the underlying operating system leading to complete system compromise.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "8.1",
  "pubDate": "2026-09-01T20:17:18.610Z",
  "pubdate": "2026-09-01T20:17:18.610Z",
  "executiveSummary": "This vulnerability concerns a critical security flaw within the API of HPE Networking Fabric Composer, classified as an arbitrary command injection vulnerability. The defect permits an unauthenticated remote attacker to execute malicious system-level commands on the underlying host operating system.\nThe impact of this vulnerability is severe, potentially resulting in complete system compromise, unauthorized access to sensitive network configuration data, and full administrative control over the appliance. The exploitability of this vulnerability is conditioned upon specific, external environmental preconditions currently outside the attacker's immediate control.\nSuccessful exploitation allows for the execution of arbitrary code with the privileges of the service account running the API, which typically facilitates full persistence and lateral movement within the management plane. Given the nature of the appliance, this poses a significant risk to the integrity, confidentiality, and availability of the managed network fabric. Remediation requires immediate attention to vendor-supplied security updates and implementation of network-level access controls to restrict exposure of the management API.",
  "technicalDetails": "The vulnerability manifests as an improper neutralization of special elements used in an OS command within the HPE Networking Fabric Composer API. The root cause lies in the application's failure to adequately sanitize or validate user-supplied input before passing it to system-level calls or shell execution environments. This enables an attacker to inject arbitrary commands that are interpreted and executed by the host operating system.\nThe attack flow initiates with a specially crafted, unauthenticated HTTP request directed at the vulnerable API endpoint. Because the application processes these requests without enforcing rigorous input validation or secure parameter handling, the attacker can leverage command injection sequences—such as shell metacharacters (e.g., semicolon, pipe, or backticks)—to escape the intended functional context and execute secondary, malicious payloads.\nExploitation is contingent upon specific preconditions related to the server's configuration or runtime environment. While these factors are not directly controlled by the attacker, if met, the API will execute the injected command stream with the same privileges as the underlying application process. Given that API services in network management appliances often operate with elevated privileges to perform infrastructure orchestration, the resulting command execution allows an attacker to achieve full host control.\nThe post-exploitation impact includes, but is not limited to, the extraction of stored credentials, manipulation of network switch configurations, exfiltration of sensitive telemetry data, and the establishment of persistent backdoors within the appliance firmware or OS layer. Because the attack occurs via the network-facing API, there is no requirement for prior authentication or local access, making the exposure surface significantly wide if the management interface is reachable over the network. The ability to pivot from the API to the host OS represents a total failure of the appliance's security isolation boundaries."
}