CVE-2022-27178 Denial of service in LinkHub Mesh Wifi

Critical 9.6 Published 5 Aug 2022 Updated 15 Apr 2025

A specially-crafted network packet can cause a denial of service in TCL LinkHub Mesh Wi-Fi devices via the confctl_set_wan_cfg functionality.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2022-27178?

CVE-2022-27178 is a critical denial of service vulnerability in TCL LinkHub Mesh Wifi, published on 5 Aug 2022. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A denial of service vulnerability exists in the confctl_set_wan_cfg functionality of TCL LinkHub Mesh Wi-Fi MS1G_00_01.00_14. A specially-crafted network packet can lead to denial of service. An attacker can send packets to trigger this vulnerability.

Weakness: CWE-284

Which versions are affected by CVE-2022-27178?

It affects 1 product.

Products include Tcl Linkhub Mesh Wifi Ac1200.

How do I fix CVE-2022-27178?

No fix has been published for CVE-2022-27178 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2022-27178 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-27178 exists.

Sources

Also known as GHSA-qgx7-f9jh-h598.