Description

A vulnerability in the API of HPE Networking Fabric Composer could allow an unauthenticated remote attacker to conduct a denial of service attack. Successful exploitation could allow an attacker to disrupt the availability of the affected interface.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "7.5",
  "pubDate": "2026-09-01T20:17:18.957Z",
  "pubdate": "2026-09-01T20:17:18.957Z",
  "executiveSummary": "A critical vulnerability has been identified within the API component of HPE Networking Fabric Composer that enables unauthenticated remote attackers to trigger a Denial of Service (DoS) condition.\nThis vulnerability specifically targets the availability of the affected interface, allowing unauthorized actors to disrupt critical network management operations.\nThe flaw stems from insufficient input validation or resource management within the API layer, which can be leveraged to exhaust system resources or crash the targeted service.\nGiven that the exploit requires no prior authentication and can be executed remotely, the risk to operational continuity is significant.\nSuccessful exploitation results in the loss of administrative control over the networking fabric, preventing legitimate operators from managing or monitoring the infrastructure until the affected service is restored.\nThe vulnerability represents a high-impact threat to availability, necessitating immediate attention to network segmentation and service hardening.",
  "technicalDetails": "The vulnerability resides within the exposed API endpoints of the HPE Networking Fabric Composer, which fails to adequately sanitize or limit incoming requests from unauthenticated network entities.\nThe root cause is likely an improper handling of specific malformed requests or an exhaustion of available worker threads/memory buffers when processing API calls, leading to a service crash or an indefinite hang of the management interface.\nThe attack flow begins with the attacker identifying the target API endpoint accessible via the network. Since the interface does not mandate authentication, the attacker can transmit a series of crafted, high-volume, or resource-intensive requests directly to the service.\nUpon receiving these inputs, the vulnerable component attempts to process the payload without implementing appropriate rate-limiting or input verification mechanisms. This results in the consumption of excessive CPU or memory resources, or triggers an unhandled exception that causes the API service process to terminate.\nBecause the vulnerability is exploitable remotely, any device capable of routing traffic to the management interface of the HPE Networking Fabric Composer is a potential vector.\nThe impact is strictly centered on the availability of the management plane. By disrupting the API, the attacker effectively blinds the administrator to the current state of the networking fabric and prevents the deployment of new configurations, updates, or security policies.\nPost-exploitation, the service may require a manual restart or administrative intervention to restore functionality, as the process crash prevents automatic recovery. The absence of authentication requirements during the initial exploitation phase allows for low-complexity, automated attacks that could be launched from compromised assets within the internal network or via misconfigured perimeter security controls."
}