---
id: CVE-2026-30814
title: "A stack-based buffer overflow in the tmpServer module of TP-Link Archer AX53 v1.0\_allows an authenticated adjacent attacker to trigger a segmentation fault and potentially execute arbitrary code via a specially crafted configuration file…"
summary: "A stack-based buffer overflow in the tmpServer module of TP-Link Archer AX53 v1.0\_allows an authenticated adjacent attacker to trigger a segmentation fault and potentially execute arbitrary code via a specially crafted configuration file…"
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-121
  - CWE-787
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-2026-30814'
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-2025-2302'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.00558
epssPercentile: 0.44071
ingestedAt: '2026-07-26T10:11:58.466Z'
---

## Overview

A stack-based buffer overflow in the tmpServer module of TP-Link Archer AX53 v1.0 allows an authenticated adjacent attacker to trigger a segmentation fault and potentially execute arbitrary code via a specially crafted configuration file. Successful exploitation may cause a crash and could allow arbitrary code execution, enabling modification of device state, exposure of sensitive data, or further compromise of device 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`