Review reviewHigh

CVE-2026-30818

TP-Link Systems Inc. AX53 v1.0, archer ax53 firmware, archer ax53

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.

CVSS: 8.5
EPSS: 1.23%
CISA KEV: Not listed
Published: 2026.04.09

PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability1.23%

Technical severityCVSS 8.5

Vulnerability overview

Affected product and versions

Product: TP-Link Systems Inc. AX53 v1.0, archer ax53 firmware, archer ax53
Affected versions: < 1.7.1 Build 20260213, < 1.7.1
Fixed versions: 1.7.1

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that TP-Link Systems Inc. AX53 v1.0, archer ax53 firmware, archer ax53 and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CWE: CWE-78