CVE-2026-4164 Wavlink WL-WN578W2 POST Request wireless.cgi GuestWifi command injection
Remote attackers can execute arbitrary commands on Wavlink WL-WN578W2 routers via the wireless.cgi handler, requiring an upgrade to mitigate.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-4164?
CVE-2026-4164 is a critical command injection vulnerability in Wavlink WL-WN578W2, published on 15 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A flaw has been found in Wavlink WL-WN578W2 221110. Impacted is the function Delete_Mac_list/SetName/GuestWifi of the file /cgi-bin/wireless.cgi of the component POST Request Handler. Executing a manipulation can lead to command injection. It is possible to launch the attack remotely. The exploit has been published and may be used. It is recommended to upgrade the affected component.
Which versions are affected by CVE-2026-4164?
How do I fix CVE-2026-4164?
No fix has been published for CVE-2026-4164 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-2026-4164 being exploited?
There is no known exploitation of CVE-2026-4164 in the wild and no public exploit code.
Sources
Also known as GHSA-4hx7-4qhw-8hjh.