Description

A vulnerability in an API endpoint of AOS-CX could allow a remote unauthenticated attacker to obtain sensitive information via a man-in-the-middle attack. Successful exploitation allows an attacker to retrieve data which could be used to further compromise the confidentiality of the affected system.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "5.9",
  "pubDate": "2026-09-01T21:18:42.210Z",
  "pubdate": "2026-09-01T21:18:42.210Z",
  "executiveSummary": "A critical vulnerability exists within an API endpoint of AOS-CX, enabling remote, unauthenticated attackers to conduct man-in-the-middle (MitM) attacks.\nThe vulnerability type pertains to insufficient transport layer security or improper validation of communication channels, which facilitates the unauthorized interception and retrieval of sensitive data.\nThis flaw impacts the confidentiality of the affected AOS-CX system by exposing proprietary or sensitive operational information transmitted via the compromised API.\nExploitation does not require prior authentication or elevated privileges, significantly lowering the barrier to entry for remote adversaries.\nThe primary risk implication is the potential for information leakage that could serve as a precursor to more severe systemic compromises, including unauthorized system configuration access or lateral movement within the network infrastructure.\nGiven the remote and unauthenticated nature of the attack vector, organizations deploying AOS-CX are exposed to significant risks unless the affected API endpoints are properly secured or isolated from untrusted network segments.",
  "technicalDetails": "The vulnerability resides in the implementation of an API endpoint within the AOS-CX software stack. The root cause centers on an failure to adequately enforce secure communication protocols or validate the integrity of the data stream, effectively allowing an attacker to intercept traffic via a man-in-the-middle (MitM) position.\nThe attack flow initiates with the attacker positioning themselves between the legitimate AOS-CX management interface and the client-side consumer of the API. Because the API fails to provide robust cryptographic protections—such as mandatory TLS enforcement, proper certificate pinning, or secure mutual authentication—the attacker can intercept the request/response cycle.\nWhen a user or automated system interacts with the vulnerable API, the attacker utilizes standard network-level interception techniques (such as ARP spoofing or DNS poisoning) to route traffic through an adversarial node. Once the connection is intercepted, the attacker can silently extract sensitive data fields, session tokens, or configuration parameters contained within the plaintext or inadequately protected HTTP headers and payloads.\nThe lack of authentication requirements allows an unauthenticated remote actor to trigger this behavior without presenting valid credentials. Furthermore, because the vulnerability is inherent to the API communication process, it remains effective regardless of user-level permissions.\nThe payload behavior involves the transparent proxying of packets while simultaneously logging or exfiltrating the contents of the API response. The post-exploitation impact includes, but is not limited to, the exposure of network topology data, sensitive environmental credentials, or system state information. This harvested data acts as a force multiplier for subsequent attacks, potentially allowing the attacker to bypass access controls or escalate privileges by leveraging the exposed metadata to identify further attack surfaces within the AOS-CX ecosystem.\nAs the API serves as a primary interface for system management, the failure to secure this transit path undermines the entire trust model of the AOS-CX deployment."
}