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CVE-2026-2615

HIGH CVSS 4.0: 7.3 EPSS 0.44%
Updated Feb 18, 2026
Wavlink
Parameter Value
CVSS 7.3 (HIGH)
Affected Versions before 2025-12-08
Type CWE-74 (Injection), CWE-77 (Command Injection)
Vendor Wavlink
Public PoC No

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.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
High
Admin privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v4.0

Vulnerable Products 2

Configuration From (including) Up to (excluding)
Wavlink Wl-Nu516u1_Firmware
cpe:2.3:o:wavlink:wl-nu516u1_firmware:*:*:*:*:*:*:*:*
<= 2025-12-08
Wavlink Wl-Nu516u1
cpe:2.3:h:wavlink:wl-nu516u1:-:*:*:*:*:*:*:*