Description
A flaw has been found in Wavlink NU516U1 251208. This affects the function sub_401A10 of the file /cgi-bin/login.cgi. Executing a manipulation of the argument ipaddr can lead to out-of-bounds write. The attack may be performed from remote. The exploit has been published and may be used. Upgrading the affected component is recommended. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.
References (6)
Core 6
Core References
Permissions Required, VDB Entry vdb-entry
technical-description
https://vuldb.com/?id.349649
Permissions Required, VDB Entry signature
permissions-required
https://vuldb.com/?ctiid.349649
Permissions Required, VDB Entry third-party-advisory
https://vuldb.com/?submit.759226
Third Party Advisory exploit
https://github.com/Wlz1112/Wavlink-NU516U1-V251208-/blob/main/ipaddr.md#exp-exploit--poc
Third Party Advisory related
https://github.com/Wlz1112/Wavlink-NU516U1-V251208-/blob/main/ipaddr.md
Scores
CVSS v3
9.8
EPSS
0.0082
EPSS Percentile
52.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
total
Details
CWE
CWE-119
CWE-787
Status
published
Products (1)
wavlink/wl-nu516u1_firmware
251208
Published
Mar 08, 2026
Tracked Since
Mar 08, 2026