CVE-2022-21178 Command injection in LinkHub Mesh Wifi

Critical 9.6 Published 5 Aug 2022 Updated 15 Apr 2025

An attacker can execute arbitrary commands on TCL LinkHub Mesh Wifi devices by sending a specially crafted network packet to the confsrv service.

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-2022-21178?

CVE-2022-21178 is a critical command injection 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

An os command injection vulnerability exists in the confsrv ucloud_add_new_node functionality of TCL LinkHub Mesh Wifi MS1G_00_01.00_14. A specially-crafted network packet can lead to arbitrary command execution. An attacker can send a malicious packet to trigger this vulnerability.

Weakness: CWE-78

Which versions are affected by CVE-2022-21178?

It affects 1 product.

Products include Tcl Linkhub Mesh Wifi Ac1200.

How do I fix CVE-2022-21178?

No fix has been published for CVE-2022-21178 yet. Limit exposure of the affected software until one is available.

Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.

Is CVE-2022-21178 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-21178 exists.

Sources

Also known as GHSA-rfmq-mgqr-6334.