CVE-2026-3662 Wavlink WL-NU516U1 adm.cgi usb_p910 command injection
Remote attackers can execute arbitrary commands on Wavlink WL-NU516U1 routers via the usb_p910 function in adm.cgi.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-3662?
CVE-2026-3662 is a medium-severity command injection vulnerability in Wavlink WL-NU516U1, published on 7 Mar 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
A vulnerability has been found in Wavlink WL-NU516U1 240425. This vulnerability affects the function usb_p910 of the file /cgi-bin/adm.cgi. Such manipulation of the argument Pr_mode leads to command injection. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure.
Which versions are affected by CVE-2026-3662?
It affects 1 product.
Products include Wavlink Wl-Nu516u1 Firmware.
How do I fix CVE-2026-3662?
No fix has been published for CVE-2026-3662 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-2026-3662 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-3662 exists.
Other vulnerabilities in Wavlink WL-NU516U1
- CVE-2026-3703 Wavlink NU516U1 login.cgi sub_401A10 out-of-bounds write
- CVE-2026-4861 Wavlink WL-NU516U1 nas.cgi ftext stack-based overflow
- CVE-2026-3612 Wavlink WL-NU516U1 OTA Online Upgrade adm.cgi sub_405AF4 command injection
- CVE-2026-3613 Wavlink WL-NU516U1 login.cgi sub_401A0C stack-based overflow
- CVE-2026-2615 Wavlink WL-NU516U1 firewall.cgi singlePortForwardDelete command injection
Sources
Also known as GHSA-g449-jq9r-wx9r.