CVE-2026-7690 Wavlink WL-WN570HA1 adm.cgi set_sys_adm command injection

Medium 5.3 Published 3 May 2026 Updated 4 May 2026

Remote attackers can execute arbitrary commands via the Username parameter in the admin interface of unsupported Wavlink routers.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-7690?

CVE-2026-7690 is a medium-severity command injection vulnerability in Wavlink WL-WN570HA1, published on 3 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A weakness has been identified in Wavlink WL-WN570HA1 R70HA1 V1410_221110. This issue affects the function set_sys_adm of the file /cgi-bin/adm.cgi. This manipulation of the argument Username causes command injection. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be used for attacks. Once again the vendors acted very professional and confirms, "that the WN570HA1 firmware version R70HA1 V1410_221110 has been removed from our website." This vulnerability only affects products that are no longer supported by the maintainer.

Weakness: CWE-77, CWE-74

Which versions are affected by CVE-2026-7690?

It affects 1 product.

Products include Wavlink Wl-Wn570ha1 Firmware.

How do I fix CVE-2026-7690?

No fix has been published for CVE-2026-7690 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-2026-7690 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-7690 exists.

Sources

Also known as GHSA-6jr2-m439-xcmf.