CVE-2026-30818

HIGH

OS Command Injection Vulnerability in dnsmasq Module in TP-Link AX53

Title source: cna

Description

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.

References (4)

[Vendor Advisory] https://www.tp-link.com/us/support/faq/5055/

[Patch] https://www.tp-link.com/my/support/download/archer-ax53/v1/#Firmware

[Patch] https://www.tp-link.com/en/support/download/archer-ax53/v1/#Firmware

[Third Party Advisory] https://talosintelligence.com/vulnerability_reports/

Scores

CVSS v3 8.0

EPSS 0.0016

EPSS Percentile 37.0%

Attack Vector ADJACENT_NETWORK

CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact total

Details

CWE

CWE-78

Status published

Products (2)

tp-link/archer_ax53_firmware < 1.7.1

TP-Link Systems Inc./AX53 v1.0 < 1.7.1 Build 20260213

Published Apr 08, 2026

Tracked Since Apr 09, 2026