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.
References (5)
Core 5
Core References
Permissions Required, VDB Entry vdb-entry
technical-description
https://vuldb.com/?id.346265
Permissions Required, VDB Entry signature
permissions-required
https://vuldb.com/?ctiid.346265
Permissions Required, VDB Entry third-party-advisory
https://vuldb.com/?submit.751047
Various Sources related
https://github.com/Wlz1112/Wavlink-NU516U1-V251208-/blob/main/singlePortForwardDelete.md
Scores
CVSS v3
7.2
EPSS
0.0046
EPSS Percentile
64.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
total
Details
CWE
CWE-74
CWE-77
Status
published
Products (1)
wavlink/wl-nu516u1_firmware
< 2025-12-08
Published
Feb 17, 2026
Tracked Since
Feb 18, 2026