Description
A weakness has been identified in Wavlink WL-NU516U1 20251208. Affected by this issue is the function sub_40785C of the file /cgi-bin/adm.cgi. This manipulation of the argument time_zone causes stack-based buffer overflow. The attack can be initiated remotely. The attack is considered to have high complexity. The exploitation is known to be difficult. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
References (4)
Core 4
Core References
Permissions Required, VDB Entry vdb-entry
technical-description
https://vuldb.com/?id.346172
Permissions Required, VDB Entry signature
permissions-required
https://vuldb.com/?ctiid.346172
Permissions Required, VDB Entry third-party-advisory
https://vuldb.com/?submit.751133
Various Sources exploit
https://github.com/Wlz1112/Wavlink-NU516U1-V251208-/blob/main/time_zone.md
Scores
CVSS v3
6.6
EPSS
0.0005
EPSS Percentile
15.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/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-121
CWE-119
Status
published
Products (1)
wavlink/wl-nu516u1_firmware
< 2025-12-08
Published
Feb 16, 2026
Tracked Since
Feb 18, 2026