CVE-2026-8227 Wavlink NU516U1 adm.cgi wzdapMesh os command injection
Remote attackers can execute arbitrary OS commands on Wavlink NU516U1 routers via the wzdapMesh function in adm.cgi.
- 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-2026-8227?
CVE-2026-8227 is a medium-severity command injection vulnerability in Wavlink NU516U1, published on 10 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 NU516U1 240425. This issue affects the function wzdapMesh of the file /cgi-bin/adm.cgi. This manipulation causes os command injection. The attack may be initiated remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure.
Which versions are affected by CVE-2026-8227?
It affects 1 product.
Products include Wavlink Wl-Nu516u1 Firmware.
How do I fix CVE-2026-8227?
No fix has been published for CVE-2026-8227 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-2026-8227 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-8227 exists.
Other vulnerabilities in Wavlink 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-6xrj-qcqh-6mmx.