---
id: "CVE-2026-79859"
kind: "vulnerability"
aliases: ["CVE-2026-79859"]
title: "ArubaOS AOS-8 controllers: buffer overflow lets unauthenticated attackers run code as root"
severity: "critical"
cvss: 9.8
epss: 0.00561
exploited: false
status: "open"
category: "infrastructure"
products: [{"name": "ArubaOS (AOS-8)", "fixed": ["8.13.3.1", "8.10.0.24"], "affected": ">= 8.13.0.0, <= 8.13.3.0; >= 8.10.0.0, <= 8.10.0.23", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["alcatel-lucent-enterprise", "aos-8", "aruba", "arubaos", "hpe", "infrastructure", "network-appliance", "rce", "self-hosted", "unauthenticated", "wireless-controller"]
not_affected_if: ["version-outside-affected-ranges"]
published_at: "2026-10-22T19:17:58+00:00"
first_seen_at: "2026-10-23T21:57:32+00:00"
updated_at: "2026-10-25T12:38:51+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-79859", "first_seen_at": "2026-10-23T21:57:32+00:00"}, {"source": "analyst", "url": null, "first_seen_at": "2026-10-23T22:19:05+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-79859", "first_seen_at": "2026-10-24T07:15:51+00:00"}]
---

# ArubaOS AOS-8 controllers: buffer overflow lets unauthenticated attackers run code as root

ArubaOS AOS-8 wireless controllers have a buffer overflow in an exposed interface. An unauthenticated attacker who reaches it can run arbitrary code as a privileged user on the underlying operating system.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- vendor:ArubaOS (AOS-8) affected >= 8.13.0.0, <= 8.13.3.0; >= 8.10.0.0, <= 8.10.0.23 fixed 8.13.3.1, 8.10.0.24

## How to check

Check the running version on the controller with 'show version' and compare it to the affected ranges: 8.13.0.0 to 8.13.3.0 and 8.10.0.0 to 8.10.0.23.

## Fix

Upgrade to AOS-8 8.13.3.1 or 8.10.0.24, or later fixed releases.

## Timeline

- 2026-10-23T21:57:32+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-79859
- 2026-10-23T22:19:05+00:00 analyst — Triage was wrong: this is HPE Aruba Networking ArubaOS (AOS-8), not Alcatel-Lucent Enterprise. Source: HPE bulletin HPESBNW05162 (page text not scrapeable; details from NVD/CVE.org and cyberpress). HPE says no known public PoC or exploitation at release. Exact vulnerable interface not stated (listed only as 'AOS-8'); the bulletin has 72 CVEs. CVE.org starts the affected range at 8.12.0.0, NVD at 8.13.0.0.
- 2026-10-24T07:15:51+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2026-79859

## Documents

- [advisory] HPESBNW05162 rev.1 - Multiple Vulnerabilities in HPE Networking Wireless OS (AOS-10 & AOS-8) https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbnw05162en_us&docLocale=en_US
- [describes] NVD CVE-2026-79859 https://nvd.nist.gov/vuln/detail/CVE-2026-79859
- [fix] Critical HPE Aruba AOS-8 Vulnerability (cyberpress) https://cyberpress.org/critical-hpe-aruba-aos-8-vulnerability/
- [mentions] HPE patches eight max severity RCE and auth bypass AOS flaws https://www.bleepingcomputer.com/news/security/hpe-patches-eight-max-severity-rce-and-auth-bypass-aos-flaws/

## From the sources

Buffer overflow vulnerabilities exist in the affected interface of AOS-8 that could lead to unauthenticated remote code execution. Successful exploitation could allow an attacker to execute arbitrary code as a privileged user on the underlying operating system.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_