Description

A privilege escalation vulnerability exists in the API endpoint of AOS-CX. Successful exploitation could allow an authenticated low privilege operator user to change the state of certain settings of a vulnerable system.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "6.5",
  "pubDate": "2026-09-01T21:18:42.503Z",
  "pubdate": "2026-09-01T21:18:42.503Z",
  "executiveSummary": "A privilege escalation vulnerability has been identified within the API endpoint of AOS-CX, which permits authenticated users with low-level operator privileges to modify restricted system settings.\nThis vulnerability stems from insufficient authorization checks during the processing of API requests, allowing an attacker to perform actions that should be restricted to administrative roles.\nThe scope of the vulnerability includes the AOS-CX API layer, which acts as the management interface for the network device.\nThe risk implication is significant as it facilitates unauthorized configuration changes, potentially compromising the integrity and security posture of the network environment.\nExploitation requires an attacker to possess valid, low-privilege credentials on the system, which are then leveraged to bypass access control lists (ACLs) enforced by the API gateway.\nSuccessful exploitation results in the unauthorized alteration of system states, which may lead to service disruption, configuration manipulation, or further escalation of privileges depending on the settings modified.",
  "technicalDetails": "The vulnerability resides within the AOS-CX API management framework, specifically concerning the validation logic applied to incoming REST API requests.\nThe root cause is an improper authorization check in the backend handler that processes configuration state changes. While the API endpoint correctly validates authentication, it fails to perform a secondary, robust authorization check to ensure the requesting user possesses the specific administrative permissions required to modify protected system variables.\nThe attack flow begins with an authenticated attacker, holding only operator-level access, crafting a specific API request targeting sensitive configuration parameters. By interacting directly with the API endpoint, the attacker sends a request that the underlying service logic assumes has already been vetted for the appropriate privilege level.\nBecause the API component fails to re-verify the authorization context against the requested resource at the function level, the request is executed with elevated context despite the origin being an operator-level session.\nThe exploitation method involves the manipulation of HTTP request parameters or payload fields that communicate state transitions to the AOS-CX management process. By sending a malformed or unauthorized state change command, the attacker triggers the modification of system settings that are intended to be immutable by non-administrative entities.\nPost-exploitation impact involves the ability to force the system into an inconsistent or insecure state, potentially disrupting administrative oversight, altering network traffic flow, or enabling further unauthorized actions that would typically be gated by administrative role-based access control (RBAC).\nThis vulnerability is restricted to the network-accessible API interface of the AOS-CX system. The lack of stringent enforcement at the API controller layer effectively bypasses the device’s security boundary, granting low-privilege operators unauthorized administrative-like capabilities over critical system settings."
}