Description

A buffer overflow vulnerability exists in the underlying operating system of AOS-CX that could lead to unauthenticated disclosure of sensitive information by sending specially crafted packets to the affected system. Successful exploitation of this vulnerability could result in limited disclosure or modification of information and disruption of the affected system.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "7.6",
  "pubDate": "2026-09-01T21:18:44.180Z",
  "pubdate": "2026-09-01T21:18:44.180Z",
  "executiveSummary": "A critical buffer overflow vulnerability has been identified within the underlying operating system of AOS-CX, which poses a significant security risk to affected network infrastructure.\nThis vulnerability allows an unauthenticated, remote attacker to trigger memory corruption by transmitting specially crafted packets to the target system.\nThe successful exploitation of this flaw can result in the unauthorized disclosure of sensitive system information, the modification of critical data, or the disruption of network services, leading to a potential denial-of-service condition.\nGiven that the exploit does not require prior authentication, the risk is elevated for systems exposed to untrusted network segments.\nThe vulnerability resides in the core OS handling of network traffic, necessitating immediate attention to mitigate risks associated with unauthorized data access and operational instability.",
  "technicalDetails": "The vulnerability is a buffer overflow condition occurring within the packet processing stack of the AOS-CX operating system. Buffer overflows occur when data sent to a program exceeds the allocated memory boundaries of the buffer, leading to the corruption of adjacent memory segments.\nThe exploitation mechanism involves an attacker injecting a maliciously crafted packet into the network interface that is parsed by the affected system's OS kernel or specialized networking service. When the target component processes this malformed packet, the lack of rigorous bounds checking leads to a write-out-of-bounds error.\nThe attack flow proceeds as follows: First, the attacker identifies a network-exposed service on the AOS-CX device that lacks input validation. Second, the attacker crafts a payload designed to overflow the specific memory buffer associated with the packet parsing function. Third, by delivering this packet to the device, the attacker overwrites critical control structures, such as return addresses or function pointers within the process's stack or heap memory.\nSuccessful exploitation allows for the alteration of execution flow or the reading of out-of-bounds memory locations. By forcing the system to return or process data from unauthorized memory, an attacker may retrieve sensitive information stored in the system's runtime memory or cause the system to crash, resulting in a disruption of services.\nBecause the vulnerability exists in the underlying OS, the impact is comprehensive, potentially allowing an attacker to bypass standard application-layer security controls. The exploitation does not require the attacker to have pre-existing credentials, making the attack surface strictly network-dependent.\nThe technical root cause is an improper validation of packet length headers or payload sizes before copying the data into a fixed-size memory structure. The resulting instability stems from the integrity violation of the process memory space, which the AOS-CX OS is unable to prevent or isolate, ultimately leading to information leakage or system-wide process failure."
}