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.
History

Wed, 18 Feb 2026 19:45:00 +0000

Type Values Removed Values Added
First Time appeared Wavlink wl-nu516u1 Firmware
CPEs cpe:2.3:h:wavlink:wl-nu516u1:-:*:*:*:*:*:*:*
cpe:2.3:o:wavlink:wl-nu516u1_firmware:*:*:*:*:*:*:*:*
Vendors & Products Wavlink wl-nu516u1 Firmware

Wed, 18 Feb 2026 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 18 Feb 2026 11:00:00 +0000

Type Values Removed Values Added
First Time appeared Wavlink
Wavlink wl-nu516u1
Vendors & Products Wavlink
Wavlink wl-nu516u1

Tue, 17 Feb 2026 13:15:00 +0000

Type Values Removed Values Added
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.
Title Wavlink WL-NU516U1 firewall.cgi singlePortForwardDelete command injection
Weaknesses CWE-74
CWE-77
References
Metrics cvssV2_0

{'score': 8.3, 'vector': 'AV:N/AC:L/Au:M/C:C/I:C/A:C/E:POC/RL:ND/RC:UR'}

cvssV3_0

{'score': 7.2, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R'}

cvssV3_1

{'score': 7.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R'}

cvssV4_0

{'score': 8.6, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published: 2026-02-17T13:02:06.390Z

Updated: 2026-02-17T14:16:35.087Z

Reserved: 2026-02-17T06:53:05.788Z

Link: CVE-2026-2615

cve-icon Vulnrichment

Updated: 2026-02-17T14:16:29.888Z

cve-icon NVD

Status : Analyzed

Published: 2026-02-17T13:16:17.113

Modified: 2026-02-18T19:36:44.157

Link: CVE-2026-2615

cve-icon Redhat

No data.