CVE-2026-3613 HIGH

CVE-2026-3613: Wavlink WL-NU516U1 login.cgi sub_401A0C stack-based overflow

Vendor Wavlink
Product WL-NU516U1
Weakness CWE-121
Published March 6, 2026
Last update March 9, 2026
View on NVD All CVEs

CVSS base score

8.6/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction None
Confidentiality —
Integrity —

CVSS 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

What the vulnerability does

01Description

A vulnerability was identified in Wavlink WL-NU516U1 V240425. This vulnerability affects the function sub_401A0C of the file /cgi-bin/login.cgi. Such manipulation of the argument ipaddr leads to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure.

Key dates

02Disclosure timeline

March 6, 2026 CVE published
March 9, 2026 Record updated