CVE-2026-8190: Wavlink NU516U1 WAN Configuration Injection

Summary

An attacker can remotely inject malicious commands into a Wavlink NU516U1 router's WAN configuration. This could allow an attacker to gain unauthorized access to the router or disrupt internet connectivity. The vendor has been notified and users should consider updating their firmware or applying a patch to mitigate this risk.

What to do

No fix is available yet. Check with your software vendor for updates.

Affected software

Vendor	Product	Affected versions
wavlink	wl-nu516u1_firmware	m16u1_v240425 `cpe:2.3:o:wavlink:wl-nu516u1_firmware:m16u1_v240425:::::::*`

Original title

A vulnerability was determined in Wavlink NU516U1 M16U1_V240425. Affected by this issue is the function wan of the file /cgi-bin/adm.cgi. This manipulation of the argument ppp_username/ppp_passwd/r...

Original description

A vulnerability was determined in Wavlink NU516U1 M16U1_V240425. Affected by this issue is the function wan of the file /cgi-bin/adm.cgi. This manipulation of the argument ppp_username/ppp_passwd/rwan_ip/rwan_mask/rwan_gateway is directly passed by the attacker/so we can control the ppp_username/ppp_passwd/rwan_ip/rwan_mask/rwan_gateway causes os command injection. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure.

nvd CVSS2.0 6.5

nvd CVSS3.1 6.3

nvd CVSS4.0 2.1

Vulnerability type

CWE-77 Command Injection

CWE-78 OS Command Injection