What’s Vulnerable › Vulnerabilities

CVE-2026-30818: OS Command Injection Vulnerability in dnsmasq Module in TP-Link AX53

• Severity: high (CVSS 8.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-08 · updated 2026-07-25
• Weakness: CWE-78

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.

Affected products

• TP-Link Systems Inc. Archer AX53 v1.0: before 1.7.1 — fixed in 1.7.1

How to fix

Upgrade to a fixed version: TP-Link Systems Inc. Archer AX53 v1.0 1.7.1. Check the vendor advisory for mitigations.

References

• https://talosintelligence.com/vulnerability_reports/
• https://www.tp-link.com/en/support/download/archer-ax53/v1/#Firmware
• https://www.tp-link.com/my/support/download/archer-ax53/v1/#Firmware
• https://www.tp-link.com/us/support/faq/5055/
• https://www.talosintelligence.com/vulnerability_reports/TALOS-2025-2306

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