---
id: CVE-2026-30818
title: >-
  An OS command injection vulnerability in the dnsmasq module of TP-Link Archer
  AX53 v1.0 allows an authenticated adjacent attacker to execute arbitrary code
  when a specially crafted configuration file is processed due to insufficient
  inpu…
summary: >-
  An OS command injection vulnerability in the dnsmasq module of TP-Link Archer
  AX53 v1.0 allows an authenticated adjacent attacker to execute arbitrary code
  when a specially crafted configuration file is processed due to insufficient
  inpu…
severity: high
cvss: 8
cvssVector: 'CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-78
vendor: tp-link
product: archer_ax53_firmware
affected:
  - archer_ax53_firmware < 1.7.1
patched:
  - archer_ax53_firmware 1.7.1
published: '2026-04-08'
updated: '2026-07-25'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-30818'
references:
  - url: 'https://talosintelligence.com/vulnerability_reports/'
    label: f23511db-6c3e-4e32-a477-6aa17d310630
  - url: 'https://www.tp-link.com/en/support/download/archer-ax53/v1/#Firmware'
    label: f23511db-6c3e-4e32-a477-6aa17d310630
  - url: 'https://www.tp-link.com/my/support/download/archer-ax53/v1/#Firmware'
    label: f23511db-6c3e-4e32-a477-6aa17d310630
  - url: 'https://www.tp-link.com/us/support/faq/5055/'
    label: f23511db-6c3e-4e32-a477-6aa17d310630
  - url: 'https://www.talosintelligence.com/vulnerability_reports/TALOS-2025-2306'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.02595
epssPercentile: 0.84658
ingestedAt: '2026-07-26T10:11:58.569Z'
---

## Overview

An OS command injection vulnerability in the dnsmasq module of TP-Link Archer AX53 v1.0 allows an authenticated adjacent attacker to execute arbitrary code when a specially crafted configuration file is processed due to insufficient input validation. Successful exploitation may allow the attacker to modify device configuration, access sensitive information, or further compromise system integrity.

This issue affects AX53 v1.0: before 1.7.1 Build 20260213.

## Affected

- `archer_ax53_firmware < 1.7.1`

## Remediation

Upgrade past the affected range:

- `archer_ax53_firmware 1.7.1`