---
id: CVE-2026-19386
title: >-
  A stack-based buffer overflow in the ASUS router modules allows an
  authenticated nearby user to execute arbitrary code via a crafted
  configuration file upload that exceeds the expected buffer size.Refer to the '
  Security Update for ASUS …
summary: >-
  A stack-based buffer overflow in the ASUS router modules allows an
  authenticated nearby user to execute arbitrary code via a crafted
  configuration file upload that exceeds the expected buffer size.Refer to the '
  Security Update for ASUS …
severity: critical
cvss: 9.3
cvssVector: 'CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H'
cwe:
  - CWE-121
vendor: ASUS
product: Router
affected:
  - Router 3.0.0.6.102 series
published: '2026-10-07'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T04:17:19.810'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-19386'
references:
  - url: 'https://www.asus.com/security-advisory'
    label: 54bf65a7-a193-42d2-b1ba-8e150d3c35e1
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-07T18:39:15.661123Z'
cvssSource: cna
epss: 0.00192
epssPercentile: 0.08986
ingestedAt: '2026-10-07T02:28:07.548Z'
---

## Overview

A stack-based buffer overflow in the ASUS router modules allows an authenticated nearby user to execute arbitrary code via a crafted configuration file upload that exceeds the expected buffer size.Refer to the ' Security Update for ASUS Router Firmware  ' section on the ASUS Security Advisory for more information.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.