CVE-2026-2567 HIGH

CVE-2026-2567: Wavlink WL-NU516U1 nas.cgi sub_401218 stack-based overflow

Vendor Wavlink
Product WL-NU516U1
Weakness CWE-121
Published February 16, 2026
Last update February 23, 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 detected in Wavlink WL-NU516U1 20251208. This vulnerability affects the function sub_401218 of the file /cgi-bin/nas.cgi. Performing a manipulation of the argument User1Passwd results in stack-based buffer overflow. The attack may be initiated remotely. The exploit is now public and may be used.

Key dates

02Disclosure timeline

February 16, 2026 CVE published
February 23, 2026 Record updated