CVE-2026-2615 Wavlink WL-NU516U1 firewall.cgi singlePortForwardDelete command injection
Remote attackers can execute arbitrary commands on Wavlink WL-NU516U1 routers via the firewall.cgi script due to improper input validation.
- 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-2026-2615?
CVE-2026-2615 is a high-severity command injection vulnerability in Wavlink WL-NU516U1, published on 17 Feb 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
A flaw has been found in Wavlink WL-NU516U1 up to 20251208. The affected element is the function singlePortForwardDelete of the file /cgi-bin/firewall.cgi. Executing a manipulation of the argument del_flag can lead to command injection. The attack may be launched remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2026-2615?
It affects 1 product.
Products include Wavlink Wl-Nu516u1 Firmware.
How do I fix CVE-2026-2615?
No fix has been published for CVE-2026-2615 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-2026-2615 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-2615 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-2026-2567 Wavlink WL-NU516U1 nas.cgi sub_401218 stack-based overflow
Sources
Also known as GHSA-wgvg-658f-w72v.