---
id: CVE-2026-84682
title: >-
  A command injection vulnerability exists in the TDDPv2 service (/usr/bin/tddp)
  on Archer AX90 V1
summary: >-
  A command injection vulnerability exists in the TDDPv2 service (/usr/bin/tddp)
  on Archer AX90 V1. An unauthenticated adjacent-network attacker can exploit
  the setProductVer command handler to execute arbitrary operating system
  commands a…
severity: high
cvss: 7.7
cvssVector: 'CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L'
cwe:
  - CWE-78
vendor: TP-Link Systems Inc.
product: Archer AX90 v1
affected:
  - archer_ax90_v1 < 1.1.4 Build 20260927
published: '2026-10-01'
updated: '2026-10-02'
sourceUpdated: '2026-10-02T04:18:09.383'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-84682'
references:
  - url: 'https://www.tp-link.com/en/support/download/archer-ax90/v1/#Firmware'
    label: f23511db-6c3e-4e32-a477-6aa17d310630
  - url: 'https://www.tp-link.com/us/support/download/archer-ax90/v1/#Firmware'
    label: f23511db-6c3e-4e32-a477-6aa17d310630
  - url: 'https://www.tp-link.com/us/support/faq/5323/'
    label: f23511db-6c3e-4e32-a477-6aa17d310630
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-01T18:58:29.069985Z'
cvssSource: cna
ingestedAt: '2026-10-01T19:58:57.556Z'
epss: 0.01207
epssPercentile: 0.68187
---

## Overview

A command injection vulnerability exists in the TDDPv2 service (/usr/bin/tddp) on Archer AX90 V1. An unauthenticated adjacent-network attacker can exploit the setProductVer command handler to execute arbitrary operating system commands as root during device boot. 

Successful exploitation may result in complete device compromise through arbitrary command execution with root privileges.

## Remediation

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