CVE-2026-4163 Wavlink WL-WN579A3 POST Request wireless.cgi GuestWifi command injection
Remote attackers can execute arbitrary commands on Wavlink WL-WN579A3 routers via the wireless.cgi GuestWifi handler.
- 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-2026-4163?
CVE-2026-4163 is a critical command injection vulnerability in Wavlink WL-WN579A3, published on 14 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability was detected in Wavlink WL-WN579A3 220323. This issue affects the function SetName/GuestWifi of the file /cgi-bin/wireless.cgi of the component POST Request Handler. Performing a manipulation results in command injection. It is possible to initiate the attack remotely. The exploit is now public and may be used. Upgrading the affected component is recommended.
Which versions are affected by CVE-2026-4163?
How do I fix CVE-2026-4163?
No fix has been published for CVE-2026-4163 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-2026-4163 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-4163 exists.
Sources
Also known as GHSA-pgmv-83cp-gpc7.