Is CVE-2026-30818 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-30818 being exploited in the wild.

How severe is CVE-2026-30818?

High severity, with a CVSS score of 8, published 8 April 2026.

Which products and versions are affected?

TP-Link Archer Ax53 before 1.7.1 Build 20260213.

Is there a fix for CVE-2026-30818?

A patch was published on 2026-02-13: Firmware build date for the fix Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-30818 attacked?

It is attacked from the adjacent network, in a network appliance.

Am I affected by CVE-2026-30818?

Check whether you run TP-Link Archer Ax53 or TP-Link Archer Ax53 Firmware at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-30818: TP-Link Archer AX53 OS command injection in dnsmasq

CVE-2026-30818 · Severity: high · CVSS 8 · Published 2026-04-08

A security vulnerability exists in the TP-Link Archer AX53, a popular Wi-Fi 6 router used in homes and small offices. An attacker who has already gained access to the local network can take full control of the device by uploading a malicious configuration file. This could allow them to monitor internet traffic, steal sensitive information, or disable the network entirely.

Technologies: TP-Link Archer Ax53, TP-Link Archer Ax53 Firmware. Vendors: TP-Link.

Quick answers

Is CVE-2026-30818 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-30818 being exploited in the wild.
How severe is CVE-2026-30818?: High severity, with a CVSS score of 8, published 8 April 2026.
Which products and versions are affected?: TP-Link Archer Ax53 before 1.7.1 Build 20260213.
Is there a fix for CVE-2026-30818?: A patch was published on 2026-02-13: Firmware build date for the fix Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-30818 attacked?: It is attacked from the adjacent network, in a network appliance.
Am I affected by CVE-2026-30818?: Check whether you run TP-Link Archer Ax53 or TP-Link Archer Ax53 Firmware at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

An OS command injection vulnerability exists in the dnsmasq module of the TP-Link Archer AX53 v1.0 router. The flaw is rooted in insufficient input validation when processing configuration restore files, specifically involving the 'dhcpscript' parameter. An authenticated attacker located on the adjacent network (LAN) can exploit this by uploading a specially crafted configuration file to execute arbitrary system commands with elevated privileges. Successful exploitation leads to full system compromise, including the ability to modify device settings and access sensitive data. The issue is resolved in firmware version 1.7.1 Build 20260213 and later.

Affected products

TP-Link Archer AX53 v1.0 before 1.7.1 Build 20260213

Timeline

2026-04-08: disclosed
2026-04-08: advisory
2026-02-13: patched: Firmware build date for the fix

References

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